Magnetic field due to currentHard
Question
A current I ampere flows along an infinitely long straight thin walled tube, then the magnetic induction at any point inside the tube is
Options
A.infinite
B.zero
C.
tesla
teslaD.
tesla
teslaSolution
Considering Ampere′s loop (shown by dotted line), no current is enclosed by this loop. Therefore, the magnetic field will be zero inside the tube.
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