Question 41
Electromagnetic InductionA circuit has an area of 0.4m2 and consists of 50 loops of wire. If the loops are twisted and allowed to rotate at a constant angular velocity of 10 rad s−1 in a uniform magnetic field of 0.4T, the amplitude of the induced voltage is
- A.8V
- B.16V
- C.20V
- D.80V
Show the answer and explanation
Answer: D (80V)
Explanation
Peak e.m.f. = NBAω = 50 × 0.4 × 0.4 × 10 = 80 V.