Electromagnetic Induction - Result Question 12
12. A conducting circular loop is placed in a uniform magnetic field of with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at . The induced emf in the loop when the radius is is
(a)
(b)
(c)
(d)
[2009]
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Answer:
Correct Answer: 12. (d)
Solution:
- (d) Induced emf in the loop is given by
where is the area of the loop.