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shows a straight, long wire carrying a c...

shows a straight, long wire carrying a current I and a rod of length l coplanar with the wire and perpendicular to it. The rod moves with a constant velocity v in a direction parallel to the wire. The distance of the wire from the centre of the rod is x. Find the motional emf induced in the rod.

A

`(mu_(0)iv)/(2pi)1n(1+(L)/(2a)),A`

B

`(mu_(0)iv)/(pi)1n(1+(L)/(2a)),B`

C

`(mu_(0)iv)/(2pi)1n(1+(L)/(a)),A`

D

`(mu_(0)iv)/(pi)1n(1+(L)/(2a)),B`

Text Solution

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The correct Answer is:
C
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CP SINGH-ELECTROMAGNETIC INDUCTION-EXERCISES
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  2. The conductor ABCDE has the shape shown. It is lies in the YZ plane, w...

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  3. shows a straight, long wire carrying a current I and a rod of length l...

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  6. A conducting loop is placed in a uniform magnetic field with its plane...

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  7. A magnet is moving towards a coil along its axis and the emf induced i...

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  8. As shown in the figure, a magnetic is moved with a a fast speed toward...

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  9. A metal rod length l rotates about on end with a uniform angular velo...

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  10. if rod is rotated about an axis passing through its mid-point , the po...

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  11. A metal conductor of length 1m rotates vertically about one of its end...

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  12. A metal rod of resistance R is fixed along a diameter o fa conducting ...

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  13. A conducting disc of radius r spins about its axis an angular velocity...

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  14. Three indential rings move with same speed on a horizontal magnetic fi...

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  15. A uniform but time-varying magnetic field B(t) exists in a circular re...

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  16. The inductance of a coil is proportional to

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  17. When the number of turns and the length of the solenoid are doubled ke...

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  18. A long solenoid has 500 turns. When a current of 2A is passed through ...

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  19. A coil is wound as a transformer of rectangular cross section. If all ...

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  20. A long solenoid of N turns has a self-induced L and area of cross-sect...

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