Question Detail
Question
The magnitude of induced emf in a coil depends on: I. number of turns; II. friction; III. speed of rotation; IV. field strength.
Correct Answer
Option C is the correct answer.
Detailed Explanation
ε = NBAω sinθ. Induced emf depends on number of turns (N), field strength (B), area (A), and angular speed (ω). Friction does not affect emf.
Hint
What factors appear in the formula for induced emf?