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Q. A current i ampere flows along an infinitely straight thin walled tube, then the magnetic induction at any point inside the tube is :-

a) infinite b) zero c) () 2i/r tesla d) 2i/r tesla

Radhika Batra , 11 Years ago
Grade 11
anser 2 Answers
ROSHAN MUJEEB

Last Activity: 4 Years ago

b)zero. and no current is being enclosed

RISHIKA

Last Activity: 4 Years ago

 
hi friend
my answer is zero
because  no current is enclosed in the circle so, from Ampere's circuital law, magnetic induction is zero at every point of the circle. Hence, the magnetic induction at any point inside the infinitely long straight thin-walled tube (cylindrical) is zero.
thanks

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