A coil of cross-sectional area A lies in a uniform magnetic field B with its plane…
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A coil of cross-sectional area A lies in a uniform magnetic field B with its plane perpendicular to the field. In this position the normal to the coil makes an angle of 0∘ with the field. The coil rotates at a uniform rate to complete one rotation in time T. Find the average induced emf in the coil during the interval when the coil rotates:v
a. from 0∘ to 90∘ position
b. from 90∘ to 180∘ position
c. from 180∘ to 270∘
d. from 270∘ to 360∘