One meter length of wire carries a constant current. The wire is bent – InterviewSolution

1.	One meter length of wire carries a constant current. The wire is bent to form a circular loop. The magnetic field at the centre of this loop is B. The same is now to form a circular loop of smaller radius to have four turns in the loop. The magnetic field at the centre of this new loop is nB. Find 'n'.
Answer» One meter length of wire carries a constant current. The wire is bent to form a circular loop. The magnetic field at the centre of this loop is B. The same is now to form a circular loop of smaller radius to have four turns in the loop. The magnetic field at the centre of this new loop is nB. Find 'n'.

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