Question

Which, among the following, is the correct expression for alternating emf generated?

(a) e=2Blvsin(θ)

(b) e=2B^2lvsin(θ)

(c) e=Blvsin(θ)

(d) e=4Blvsin(θ)

The question was posed to me in a job interview.

Origin of the question is Generation of an Alternating EMF topic in chapter Alternating Voltage and Current of Basic Electrical Engineering

Answer 1

Correct answer is (c) e=Blvsin(θ)

Easy explanation: The correct expression for alternating emf generated is e=Blvsin(θ). Where B stands for magnetic field density, l is the length of each of the parallel sides v is the velocity with which the conductor is moved and θ is the angle between the velocity and the length.