Electromagnetic Induction - Result Question 14

14. As a result of change in the magnetic flux linked to the closed loop shown in the Fig,

an e.m.f. V volt is induced in the loop. The work done (joules) in taking a charge $Q$ coulomb once along the loop is

(a) QV

(b) $2 QV$

(c) $QV / 2$

(d) Zero

[2005]

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Answer:

Correct Answer: 14. (a)

Solution:

  1. (a) $\xi=\frac{W}{Q} \Rightarrow V=\frac{W}{Q} \Rightarrow W=Q V$