When a wire loop is rotated in a magnetic field, the direction of induced emf changes once in each
change every 1/2 revolution
Magnetic Field:
The magnetic effect on electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge experiences a force that is perpendicular to both its own velocity and the magnetic field.
Magnetic Flux:
The number of magnetic field lines traveling through a closed surface is known as magnetic flux. It calculates the total magnetic field that passes across a specific surface area.
The flux of the magnetic field through the loop
Where,
When an electrical conductor is put into a magnetic field, emf is induced in it due to its dynamic interaction with the magnetic field.
As a result, the induced e.m.f. orientation changes once every revolution.
Therefore, the correct option is C.