Question Detail
Question
An AC generator produces a sinusoidal emf. At what angle does the emf become zero?
Correct Answer
Option A is the correct answer.
Detailed Explanation
The emf is given by ε = NBAω sin θ. It is zero when sin θ = 0, which occurs at θ = 0°, 180°, 360°, etc.
Hint
Zero when sin θ = 0.