Question Detail
Question
Emf induced in coil depends on: I. number of turns; II. friction at suspension; III. speed of rotation; IV. field strength.
Correct Answer
Option C is the correct answer.
Detailed Explanation
emf = N dΦ/dt, depends on N, speed (ω), and B. Friction (II) does not affect emf.
Hint
emf = N B A ω sin(ωt).