Electromagnetic Induction - Result Question 17

17. In the circuit of Fig, the bulb will become suddenly bright if

[1989]

(a) contact is made or broken

(b) contact is made

(c) contact is broken

(d) won’t become bright at all

Topic 2: Motional and Static EMI & Applications of EMI

Show Answer

Answer:

Correct Answer: 17. (c)

Solution:

  1. (c) When a circuit is broken, the induced e.m.f. is largest. So the answer is (c).