Question

A circular coil of 100 turns has an effective radius of 0.05 m and carries a current of 0.1 A. How much work is required to turn it in an external magnetic field of 1.5 Wb m^-2 through 180^@ about an axis perpendicular to the magnetic field. The plane of the coil is initially perpendicular to the magnetic field.

Answer 1

Answer:

r=0.05,I=0.1A,B=1.5,teta=90degrees

F=BILsinTeta

use this formula

u may get ans