# what is resistance class 10

Difference Between Resistance & Resistivity One of the major difference between the resistance and the resistivity of the material is that the resistance opposes the flow of free electrons whereas the resistivity is the property of the material which defines the resistance of the material having specific dimension. Resistance :-=>It is the opposition to the flow of electric current across a conductor.It is the internal property of conductor.=> S.I unit :- Ohm Resistoâ¦ Required fields are marked *, Electric charge flows easily through some materials than others. What is the reciprocal of resistivity? Sin categoría ... Resistance is the term which is the resisting of flowing of charges from a specific substance of any size. (ii) Only diameter of the wire is doubled? Specific resistance or resistivity (Ï), of a conductor, is defined as the resistance of a conductor of unit length and unit area of cross-section.From the factors affecting the resistance of a conductor, the resistance is given by,Its SI unit is ohm-mSpecific resistance or resistivity is the characteristic property of the material of the â¦ Now please don't get me wrong: if you want to buy a shed (a 'Class 10' shed building) and then convert in into a house or liveable dwelling (a 'Class 1' or 'Class â¦ | CBSE Class 10 Science | Chapter12 | Electricity | By Shruti Academy In this video, I have explained about the resistance in the electric circuits in depth from chapter-12 class 10 CBSE NCERT. unit of resistance is ohm. Practice to excel and get familiar with the paper pattern and the type of questions. PREVIOUS NEXT. Overview. Therefore, resistivity is proportional to the cross-sectional area. Calculate the value of each resistance. Question 5 WhyÂ Filament of an electric bulb is made up of tungsten metal? The resistance, R of the eureka wire is the highest whereas the resistance, R of the copper wire is the lowest. | EduRev Class 10 Question is disucussed on EduRev Study Group by 189 Class 10 Students. Filed Under: Class 10, Electricity Tagged With: area of cross section, cause of resistance, connecting wires, filament of an electric bulb, length, nichrome, resistance, resistivity. Q1. Electrical resistance is also known as specific electrical resistance. Last Updated on May 4, 2020 By Mrs Shilpi Nagpal Leave a Comment. therefore by solving for resistivity we get. Ans. Required fields are marked *. The higher the temperature the higher is the resistance. So far, you have read about various factors which affect electric current. ResistanceResistivityThe electrical resistance of an object is a measure of its opposition to the flow of electric current.Resistivity is the characteristic property of the material by which it resists the amount of current through it.It depends upon the length, area of cross-section and nature of t (d) S.I. We hope the given RBSE Solutions for Class 10 Science Chapter 10 Electricity Current will help you. 6 min. It forms a real image three times larger than the object. 2) Filament of an electric bulb is made up of tungsten metal. Class-10 Goyal Brothers Electric Circuit, Resistance and Ohm’s Law ICSE Physics Solutions Ch-8 .We Provide Step by Step Answer of Exercise, MCQs, Numerical Problem Questions of Exercise-1 Goyal Brothers Electric Circuit, Resistance and Ohm’s Law ICSE Class-10 .Visit official Website CISCE for detail information about ICSE Board Class-10 Physics. Resistor is defined as The main purpose of resistor is to reduce the current flow and to lower the voltage in any particular portion of the circuit. Factors Affecting Resistance. The resistance class is composed by two numbers, divided by a dot. The Questions and Materials having resistivity in the range of 10 â8 Î© m to 10 â¦ Class. The unit of electrical resistance is ohms. Your email address will not be published. Question 4 Why connecting wires in an electric circuit are made of Cu and Al? Resistance is the opposition that a substance offers to the flow of electric current.It is represented by the uppercase letter R. The standard unit of resistance is the ohm, sometimes written out as a word, and sometimes symbolized by the uppercase Greek letter omega: . unit of current is ampere. Ans: As we know that $$\rho =\frac{E}{J}$$, therefore by increasing the cross-sectional area of the electric cord there will be a reduction in the resistance. Filed Under: Class 10, Electricity Tagged With: resistance, resistors are connected in series, series arrangement of resistors About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. The resistance of a System of Resistors. Question 8. Sep 30,2020 - What is a resistance? When connected in series, the value becomes 9 Ω. | CBSE Class 10 Science | Chapter12 | Electricity | By Shruti Academy . Hence, length of the wire, If the diameter of the wire is doubled, new diameter . Name the materials having resistance almost equal to zero. It is given by. Resistance refers to a measure of the opposition to current flow in a particular electrical circuit. You also read about the factors which affect the resistance of a conducting wire. In these sections, we discussed simple circuits. Question 1. Check you answers with answer keys provided. Two resistance when connected in parallel give resultant value of 2 Ω. Physics.

The unit of resistivity is ohm-meter (Î©-m). The SI unit of electrical resistivity is ohms.metre. Resistivity of a conductor is defined as resistance of the conductor of unit length and unit area of cross-section. Ans: As the temperature increases, the resistance of insulators decreases. Reading of ammeter in second case is half that of reading in 1st case.

Resistivity is different in copper,Iron etc because of their nature,but if we change the shape,only resistance will change. According to Ohm’s law, there is a relation between the current flowing through a conductor and the potential difference across it. (Some resistance brazes are 10 - 20 seconds or longer - not cycles. | EduRev Class 10 Question is disucussed on EduRev Study Group by 195 Class 10 Students. In this video, I have explained about the resistance in the electric circuits in depth from chapter-12 class 10 CBSE NCERT. Slope indicates Resistance â´ Resistance of the resistor = 3.4Î©. CHEMICAL RESISTANCE GUIDE CHEMICAL RESISTANCE GUIDE Chemical Resistance Classes Three different classes of chemical resistance degree are conventionally used: class 1: HIGH RESISTANCE The materials belonging to this class are completely resistant against the conveyed fluid according to the specified operating conditions. Question 10. Ans: As we know that $$\rho =\frac{E}{J}$$. Following is the formula of electrical resistivity: Interested to learn more about the difference, below is the link: Difference Between Resistance and Resistivity. CBSE Class 10 Science Practicals Lab Manual Questions Question 1: If two resistors having resistances of 3 Î©, and 6 Î©, respectively are connected in parallel, what will be the net resistance in the circuit? | CBSE Class 10 Science | Chapter12 | Electricity | By Shruti Academy . Learn more about other related concepts with the help of engaging video lessons by visiting BYJU’S, Your email address will not be published. (Some resistance brazes are 10 - 20 seconds or longer - not cycles. Ans: As we know that $$\rho =\frac{E}{J}$$, therefore by doubling the cross-sectional area, resistance can be decreased by a factor of 2. Electric resistivity is defined as the electrical resistance offered per unit length and unit cross-sectional area at a specific temperature and is denoted by ρ. See more. What is Resistance? Filed Under: Class 10, Electricity Tagged With: resistance, resistors are connected in series, series arrangement of resistors About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of â¦ Learn Videos. If the Class 2 is struggling (excessive wear and sticking) then turn to the refractory faced electrodes Group B, Class 10 â¦ Finally, resistance of a piece of wire depends on its temperature also. The resistance of a conductor is inversely proportional to its area of cross-section. Melting point is high or does not burn at higher temperature. The electrodes can get very hot. Between A and B, the series combination of two resistors of resistances 2 ohm each is connected in parallel with the 1 ohm resistor.:. resistors. Class 10 Science Chapter 12 Board Questions of Electricity. But there is a very basic difference between resistance and resistivity. Physics. Conductor The movement of electron gives rise to the flow of current through metals Class 10 Resistance of a System of Resistors. What is Resistance? What is effective resistance? The reason behind this is the increase in the number of electrons in the conduction band which reduces the mobility thereby increasing the resistance. class 2: LIMITED RESISTANCE The materials belonging to this class … What is the effective resistance between the two points at the end of any diameter of the circle? Justify your answer.

Offered for classes 6-12, LearnNext is a popular self-learning solution for students who strive for excellence. Resistance of a conductor is directly proportional to its length R ∝ l if we increase the length of a wire (conductor),its resistance increases(and hence less current can pass through it) If we reduce length,resistance decreases (and hence more current can pass through it) The current flow increases, the resistance acts as a speed breaker to the accelerated car (high current flow). How would the resistance of the wire change when: (i) Only length of the wire is doubled? It is given by the following relation. Therefore, conductance increases and the resistance decreases. Resistance (R) of a copper wire of length l and cross-section A is given by the expression, Where, Resistivity of copper, Area of cross-section of the wire, A = Diameter= 0.5 mm = 0.0005 m. Resistance, R = 10 Ω. Q8. (a) Potential difference is measured by voltmeter. The resistance of a System of Resistors. Resistance of a conductor is inversely proportional to area of cross sectionÂ. The electrical resistance measures how much the flow of this, Difference Between Resistance And Resistivity. Write relation between heat energy produced in a conductor when a potential difference V is applied across its terminals and a current I flows through for ‘t’. (c) S.I. (b) S.I. A wire of resistance 10 ohm is bent in the form of a closed circle. Q3. KSEEB SSLC Class 10 Science Solutions Chapter 12 Electricity are part of KSEEB SSLC Class 10 Science Solutions. Il primo corrisponde al carico di rottura nominale diviso 100, mentre il secondo è il rapporto tra il carico di snervamento e il carico di rottura, moltiplicato per 10. where ρ is the resistivity of the material (measured in Ωm, ohm meter). Q5. Calculating the effective resistance/total resistance of series circuits: The total resistance/effective resistance of the circuit is found by simply adding up the resistance values of the individual . The electrical resistivity of silver is 1.60 × 10-6 Î© m. What will be the resistance of a silver wire of length 10 m and cross-sectional area 2 × 10-3 m2? Resistivity is a qualitative measurement of a material’s ability to resist flowing electric current. Answer: Every resistor has its own resistance but if we combine more than one resistor in series or parallel or both the effective resistance changes, its resultant value of the resistance is called effective resistance. Q. There is a belief among some circles that 'it's easy to take a basic shed and convert to to a house or granny flat and this makes it a cheaper way to build'. Resistivity does not depend on l and A but on nature of material of which substance is made of. A resistor is a electrical componet with a predetermined electrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohms etc. Pre Boards. Understand the various factors affecting the resistance by watching the video below. a. Then effective resistance, Q. The electrodes can get very hot. The electrical resistance of an object refers to the measure of its opposition to the flow of electric current. copper wire (B)=length (l),area of cross section is more than X. Q1. 9 min. VERY SHORT ANSWER TYPE QUESTIONS [1 Mark] Q. Ans: The reciprocal of resistivity is conductivity. If the Class 2 is struggling (excessive wear and sticking) then turn to the refractory faced electrodes Group B, Class 10 – 14. 2) Resistance of a conductor is inversely proportional to area of cross section. Question 1 A piece of wire is redrawn Â by pulling it until its length is doubles.Compare the new resistance with the original value? So far, you have read about various factors which affect electric current. Resistance is a property of conductor due to which it resists the flow of electric current through it. Answer: Let R 1 and R 2 be the two resistances, What ... What will be the length of this wire to make its resistance 10 Ω? Class 10. Your email address will not be published. Resistance and Resistivity. What happens to the resistance of insulators with an increase in temperature? The inverse quantity refers to the electrical conductance. Electricity Class 10 Important Questions Short Answer Type II. How much does the resistance change if the diameter is doubled? Class 10 Resistance of a System of Resistors. In practical applications, resistors are used to increase or decrease the electric current. A conductor has large number of free electrons.When a potential difference is maintained across the ends of conductor,the free electrons move from one end to other end.During their movement,they collide with each other and with atoms of conductor.These collision opposes the movement of electrons Â from one end to other end.This opposition to the flow of electrons due to collision is the resistance.More the collision suffered by electron in a conductor,more is the resistance. Class 10 Physics Electricity: Resistors in series: Resistors in series. 1. Your email address will not be published. Resistance definition, the act or power of resisting, opposing, or withstanding. How are given resistances connected so that equivalent resistance is increased? Question 3 On what factors does the resistance of a conductor depends? The time will be 1/10 hr. Pre Boards. Factors on which resistance of a conductor depends: 1) Resistance of a conductor is directly proportional to length. In the next few sections, let us study electrical resistance in detail. Learn Videos. It means if the resistance of the material of the conductor is 100 Ω, then the conductance will be 1/100 Ω. Find the equivalent resistance of the combination. When two or more resistors are connected in series: The current through the circuit remains the same. What is Resistance? (ii) Now, a resistance of 10 Î© is connected in parallel with the series combination. Class 10 Current Electricity Short Answer Questions TOPIC-2 Combination of resistors (Series and Parallel combination), the heating effect of electric current and electric power. These questions are useful for CBSE Board Examination preparation and practicing to class tests. PREVIOUS NEXT. The distance of image from the mirror is (a) -30 cm (b) 30 cm (c) 10 cm (d) -10 cm. For Example: Silver has lowest resistivity and is the best conductor. This video is highly rated by Class 10 students and has been viewed 8885 times. Answer: Every resistor has its own resistance but if we combine more than one resistor in series or parallel or both the effective resistance changes, its resultant value of the resistance is called effective resistance. Overview. Answers are according to the marks of the questions. An object is placed at a distance of 10 cm in front of a concave mirror. Name the factor that would reduce the resistance through an electric cord. When a potential difference (acceleration) is applied across the conductor (to car), the electrons start moving from negative to positive electrode). If you have any query regarding Rajasthan Board RBSE Class 10 Science Solutions Chapter 10 Electricity Current, drop a comment below and we will get back to you at the earliest. A conductor has large number of free electrons.When a potential difference is maintained across the ends of conductor,the free electrons move from one end to other end.During their movement,they collide with each other and with atoms of conductor.These collision opposes the movement of electrons from one end to other end.This opposition to the flow of electrons … All the questions are divided into 1 mark, 2 marks, 3 marks and 5 marks questions. The unit of electrical resistance is ohm which is defined as volt per ampere. Class 10. CBSE Class 10 Science Practicals Lab Manual MCQ Ðnswers: Physics Lab Manual CBSE Class 10 Scoring Key With Explanation (b) Ammeter measures current. Question 2 How is the resistivity of a material related to the use of that material? Resistance. Since A is doubled, keeping resistance and length constant, resistivity will also be doubled. The electrical resistance of a circuit is the ratio between the voltage applied to the current flowing through it. Resistance of a conductor also depends upon nature of material of conductor,temperature of conductor. Class-10 Goyal Brothers Electric Circuit, Resistance and Ohmâs Law ICSE Physics Solutions Ch-8 .We Provide Step by Step Answer of Exercise, MCQs, Numerical Problem Questions of Exercise-1 Goyal Brothers Electric Circuit, Resistance and Ohmâs Law ICSE Class-10 .Visit official Website CISCE for detail information about ICSE Board Class-10 â¦ Resistance of uniform metallic conductor is directly proportional to its length and inversely proportional to area of â¦ The electrical resistance of a conductor is dependent on the following factors: Electrical resistance is directly proportional to length (L) of the conductor and inversely proportional to the cross-sectional area (A). Ans: The unit of resistivity is given as Ohm-metre. Resistance (R) of a copper wire of length l and cross-section A is given by the expression, Where, Resistivity of copper, Area of cross-section of the wire, A = Diameter= 0.5 mm = 0.0005 m. Resistance, R = 10 Î©. The two 10 resistors are connected in series and they are parallel to the 5 resistor.The equivalent resistance, Subject. Unfortunately, this is not correct. What happens to the resistance of pure metals with an increase in temperature? 2. Equivalent series resistance between A and B, R, = 2+2 = 4 Ω unit of charge â¦ Resistance is the opposition that a substance offers to the flow of electric current.It is represented by the uppercase letter R. The standard unit of resistance is the ohm, sometimes written out as a word, and sometimes symbolized by the uppercase Greek letter omega: . (a) Nichrome wire of length ‘l’ and radius ‘r’ has resistance of 10 Ω. ... Resistance, $$\mathrm{R} \alpha \frac{1}{\mathrm{A}}$$. Resistors in series. Dec 25, 2020 - Fun Video: What is Electric Current (Ohm's law, Resistance and Power) Class 10 Video | EduRev is made by best teachers of Class 10. Class 10 Science Home Page. The resistance â¦ If the resistance braze generates large amounts of heat for a long time. Q33. So, new resistance is (1/16)th of original resistance. Resistance of second wire is double than 1st wire. The two 10 resistors are connected in series and they are parallel to the 5 resistor.The equivalent resistance, Subject. Materials with a low value of resistivity conduct electricity very well. Resistance and Resistivity. Disadvantages of series arrangement of resistors. Obviously, insulators will have a higher value of resistivity than that of conductors. Electricity Class 10 Important Questions Very Short Answer Type Question 1. Economics Chapter 4 Globalisation and The Indian Economy â Notes & Study Material, à¤µà¤¾à¤à¥à¤¯ à¤à¤° à¤µà¤¾à¤à¥à¤¯ à¤à¥ à¤­à¥à¤¦, Economics Chapter 3 Money and Credit â Notes & Study Material, Compounds of Xenon and uses of Noble Gases, Characteristics and Physical Properties of Group 18 Elements, Oxoacids of Halogens and Interhalogen Compounds, English Alphabets with Phonics Pronunciation. Copper wire(A)= length(l) , area of cross section X, copper wire (B)=length (l),area of cross section X. Connect wire A between the terminal,note ammeter reading. The other â¦ ICSE Class 10. Resistance (R) = 9 ohm Length l = 30 cm New Length (l) = 30 cm = 3/l = 10 cm R=Ï 1/A New Resistance : With change in length, there will be change in area of cross-section also in the same order. Therefore, resistance Q7. Reading of ammeter in second case is more that of reading in 1st case. NCERT Solutions for Class 10 Science Electricity. Q. what is resistance in physics class 10 . Electrical resistance is defined as the property of an electrical component to resist the flow of electric current. The reason behind this is the electron movement from the conduction band to the valence band increases as the energy gap between these two bands is large. 2. Given below are the Class 10 Science Solved Numerical Questions for electricity a. Concepts questions b. Calculation/Numerical problems c. Multiple choice questions d. Long answer questions e. Fill in the blanks Question 1 A wire of length 3 m and area of cross-section 1.7 × 10-6 m 2 has a resistance 3 × 10-2 ohm. In this process when electrons collide with positive ions , few electrons drift away and do not â¦ A wire of resistance 10 ohm is bent in a closed circle. HUMAN EYE AND THE COLOURFUL WORLD. I have seen some over one minute long.) CBSE Ncert Notes for Class 10 Physics Electricity. The measure of a materialâs ability to oppose current flow is also known as the resistivity, p of the material. Ans: As the temperature increases, the resistance of pure metals increase. Resistance of a conductor depends: On its length; On its area of cross-section; On the nature of its material . Q6. Class 10 Science Home Page. I have seen some over one minute long.) a)Resistivity of Cu and Al is low(act as a good conductor). Therefore, the total resistance of the circuit is given by Thus, 1 A current will flow through 10 Î© resistor and 1 A will flow through the lamp and conductor of 5 Î© resistance. NCERT Solutions for Class 10 Science Electricity Questions and Answers Intext Questions Page Number - 200 Q1. In this video, I have explained about the resistance in the electric circuits in depth from chapter-12 class 10 … Factors Affecting Resistance. 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When an electric current flows through a bulb or any conductor, the conductor offers some obstruction to the current and this obstruction is known as electrical resistance and is denoted by R. Every material has an electrical resistance and this is the reason why conductors give out heat when current passes through it. Therefore, resistance Check you answers with answer keys provided. Class 10 Physics Electricity: Factors on which Resistance depends: Factors on which Resistance depends. Sep 02,2020 - If a wire is increased by 20% .what is resistance? 1) Connecting wires in electric circuit are made up of Cu and Al. La classe di resistenza è composta da due numeri divisi da un punto. ICSE Class 10. Tungsten has low resistivity,does not burn even at higher temperature(melting point is very high), 3) Heating elements of electrical appliances like electric iron,heater,toaster,immersion rod are made of nichrome (alloy of Ni,Cr,Fe,Mn). Equivalent resistance of the circuit is the sum of individual resistances. So, R 1 = R 2 = 5 ohm, form a parallel loop. A material whose resistivity is low is a good conductor ie low resistivity means less resistance to flow of current. Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it. unit of charge is coulomb. 1. In these sections, we discussed â¦ 9 min. Resistance is a measure of how much a component or material resists the flow of electricity through it, measured in ohms. 6 min. Resistance has an application in protecting the circuit from high current flow. Resistance increases and hence less electricity can pass through it Note - This is the reason that we use thick wire to carry more electrical load (as thick wire has more area of cross section and offers less resistance and more electricity can pass through it ) Nature of Material Resistance also depends on the nature of the â¦