A current I ampere flows along an infini...

A current I ampere flows along an infinitely long straight thin walled tube, then the magnetic induction at any point inside the tube is .

`zero`

`mu_0/(4pi).(2i)/r` tesla

`(2i)/r` tesla

infinite

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The correct Answer is:

If we use Ampere's theorom, we find that the magnetic field inside a straight, current carrying thin walled tube is zero.

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