PhysicsEasy116×since 2002Q7656A current iii ampere flows along an infinitely long straight thin walled tube, then the magnetic induction at any point inside the tube isAμ04π,2ir{{{\mu _0}} \over {4\pi }},{{2i} \over r}4πμ0,r2i teslaBzeroCinfiniteD2ir{{2i} \over r}r2i teslaCheck answerSkip