The e.m.f. induced in a coil of wire, which is rotating in a magnetic field, does not depend on
Physics · Electromagnetic Induction
JEE Mains

Question

The e.m.f. induced in a coil of wire, which is rotating in a magnetic field, does not depend on

G1 Physics · Accepted Answer

Magnetic flux is Φ=∫B⃗·dA⃗ and induced emf is ε=−dΦ/dt. Apply Lenz’s law for direction and I=ε/R when the circuit is resistive. This gives the resistance of the coil.