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The resistance of a conductor is...

The resistance of a conductor is 

A

inversely proportional to the length

B

directly proportional to the square of the radius

C

inversely proportional to the square of the radius

D

directly proportional to the square root of the length

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
  1. The formula V =IR is applicable to

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  2. Which of the following wiring diagrams could be used to experimentally...

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  3. The resistance of a conductor is

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  4. On increasing the temperature of a conductor, its resistance increases...

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  5. With the increase of temperature, the ratio of conductivity to resisti...

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  6. The temperature coefficient of resistance of conductors is

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  7. The best material for making resistances in resistance box

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  8. The product of resistivity and conductivity of a cylindrical conductor...

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  9. Wires of Nichrome and Copper of equal dimensions are connected in seri...

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  10. Resistivity of a conductor depends upon

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  11. With the increase of temperature, the specific resistance of metal

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  12. At absolute zero silver wire behaves as

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  13. Material used for heating coils is

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  14. For making standard resistance wire of following material is used

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  15. The thermistors are usually made of

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  16. For a chosen nonzero value of voltage, there can be more than one valu...

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  17. A metallic resistor is connected across a battery. If the number of co...

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  18. Choose the correct alternative

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  19. Two wires of resistance R(1) and R(2) at 0^(@)C have temperature coeff...

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  20. Arrange the following materials in the increasing order of their resis...

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