In an a. c. generator, when the plane of the coil is perpendicular to the magnetic field
In an a. c. generator, when the plane of the coil is perpendicular to the magnetic field
magnetic flux is zero and induced e.m.f. is maximum.
magnetic flux is maximum and induced e.m.f. is zero.
both magnetic flux and induced e.m.f. are maximum.
both magnetic flux and induced e.m.f. are zero.
Solution
Magnetic flux, \(\phi_B=B A \cos \theta\)
where \(\theta\) is the angle between normal to the plane of the coil and magnetic field.
Induced emf, \(\varepsilon=B A \sin \theta\)
Here, \(\theta=0^{\circ}\)
\(\therefore\) Magnetic flux is maximum and induced emf is zero.