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The ratio of magnitude of current densit...

The ratio of magnitude of current density and magnitude of electric field inside the conductor is

A

Independent of temperature

B

Independent of dimension of conductor

C

Independent of material of conductor

D

All of these

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AAKASH INSTITUTE-CURRENT ELECTRICITY-ASSIGNMENT(SECTION-A(OBJECTIVE TYPE QUESTIONS))
  1. Current density vec(j ) at an area vec( A) = ( 2 hat(i ) + 3 hat(j)...

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  2. Which of the following represents the ohm's law ?

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  3. The ratio of magnitude of current density and magnitude of electric fi...

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  4. Conductivity of a conductor of length L and radius of cross-section r ...

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  5. Resistance of the conductor of length 5m and area of cross -section 4...

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  6. When electric field is applied inside a conductor then free electron ...

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  7. If n,e,A and v(d) are free electron density inside conductor , charge...

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  8. If n ,e,m and tau are free electron density in conductor , charge of ...

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  9. A current of 10 A is maintained in a conductor of cross-section 1 cm^(...

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  10. Two wires A an dB of the same material, having radii in the ratio I : ...

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  11. If mu is the mobility of free electrons inside a conductor , then m...

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  12. A potential difference of 5V is applied across a conductor of length ...

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  13. The SI unit of electron mobility is :

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  14. When electric field inside a conductor is E, mobility of free electron...

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  15. What is the range of resistivity of metallic conductors?

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  16. Wire bond resistances used in resistance boxes are made up of

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  17. A good moderator should

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  18. In a carbon resistor the last band colour is missing. Its tolerance is

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  19. Temperature coefficient of resistance of a wire at 0^(@)C is 0.00125^(...

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  20. In a platinum resistance thermometer resitance of the platinum wire at...

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