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A current i ampere flows along the inner...

A current `i` ampere flows along the inner conductor of a coaxial cable and returns along the outer conductor fo the cable, then the magnetic induction at any point outside the conductor at a distance `r` metre from the axis is

A

`infty`

B

zero

C

`(mu_(0))/(4pi)(2i)/(r)`

D

`(mu_(0))/(2pi)(2pii)/(r)`

Text Solution

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The correct Answer is:
b
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