Question Detail
Question
What is the induced emf in a 0.5-m wire moving at 10 m/s at 30° to a 0.4-T field?
Correct Answer
Option A is the correct answer.
Detailed Explanation
ε = B L v sin θ = (0.4)(0.5)(10)(sin 30°) = 0.4 × 0.5 × 10 × 0.5 = 1 V.
Hint
sin 30° = 0.5.