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The electric intensity E, current densit...

The electric intensity E, current density j and conductivity `sigma` are related as : 

A

`j=sigmaE`

B

`j=E//sigma`

C

`jE=sigma`

D

`j=sigma^(2)E`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
  1. Ohm's law is applicable to

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  2. Ohm's law is not applicable for

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  3. The electric intensity E, current density j and conductivity sigma are...

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  4. The formula V =IR is applicable to

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

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  6. The resistance of a conductor is

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

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

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  9. The temperature coefficient of resistance of conductors is

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  10. The best material for making resistances in resistance box

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

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

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  13. Resistivity of a conductor depends upon

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

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  15. At absolute zero silver wire behaves as

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  16. Material used for heating coils is

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

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  18. The thermistors are usually made of

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

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

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