Question

When a coil rotated in magnetic field induced current in it :

• A. continuously changes
• B. remains same
• C. becomes zero
• D. becomes maximum

Answer 1

The correct option is A continuously changes

We know that EMF induced=$E=NBA\omega \cos \omega t$

$⟹I=\frac{E}{R}=\frac{NBA\omega }{R}\cos \omega t$

Hence, current continuously changes with time.

Answer-(A)