Magnetic field due to currentHard
Question
A long wire carries a steady current. It is bent into a circle of one turn and the magnetic field at the centre of the coil is B. It is then bent into a circular loop of n turns. The magnetic field at the centre of the coil will be
Options
A.nB
B.n2B
C.2nB
D.2n2B
= n2 
= n2B.More Magnetic field due to current Questions
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