Electromagnetic Induction and Alternating Current 2 Question 4
5. A thin semicircular conducting ring of radius is falling with its plane vertical in a horizontal magnetic induction . At the position the speed of the ring is and the potential difference developed across the ring is
(a) zero
(b)
(c)
(d)
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Answer:
Correct Answer: 5. (d)
Solution:
- Induced motional emf in
is equivalent to the motional emf in an imaginary wire i.e.
Therefore, the potential difference developed across the ring is