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Unit of electric current density is .......

Unit of electric current density is .... .

A

Am

B

`Am^(-1)`

C

`Am^(-2)`

D

`AC^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
  1. Electric current density is ..... .

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  2. ampere xx second = ....

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  3. Unit of electric current density is .... .

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  4. A steady current flows in a metallic conductor of non-uniform cross-se...

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  5. An electron completes 25 rotations in 1 seconds on circular path, then...

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  6. The current through a wire varies with time as I= I(0) + alpha t , whe...

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  7. Charge passing through a conductor carrying current is given by Q = 5t...

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  8. A charge of 2 xx 10^(-2) C moves at 30 revolutions per second in a ci...

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  9. A charge on electron is 1.6 xx 10^(-19) C. How many electrons will be ...

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  10. 30 coulomb electric charge passes through conducting wire in 10 minute...

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  11. In a hydrogen atom, the electron is moving in a circular orbit of radi...

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  12. A ring of radius R and linear charge density lambda on its surface is ...

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  13. Cross-sectional area of proton beam having electric current 1 muA is 0...

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  14. Current density in a copper wire is 2.5 xx 10^(8) Am^(-2). If 8A curre...

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  15. Charge passing through the cross-section of a conductor h given by Q =...

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  16. The current through a wire varies wilh time as I = I(0) + alpha t wh...

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  17. Electric charge passing through a resistor changes with time t as Q = ...

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  18. When an electric cell is in use, .... Relation holds good.

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  19. Resistivity of material does not depend on ...... of conductor

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  20. Lengths and cross-sectional areas of three copper wires are (l, A ), (...

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