Electro Magnetic Induction And Alternating Currents Question 404
Question: A thin semicircular conducting ring of radius R is fallin with its plane vertical in a horizontal magnetic induction B. At the position MNQ, the speed of the ring is v and the potential difference developed across the ring is
Options:
A) Zero
B)
C)
D)
Show Answer
Answer:
Correct Answer: D
Solution:
-
Rate of decrease of area of the semicircular ring
According to Faraday’s law of induction induced emf
The induced current in the ring must generate magnetic field in the upward direction.
Thus
