Question
Question: A metallic ring connected to a rod oscillates freely like a pendulum. If now a magnetic field is app...
A metallic ring connected to a rod oscillates freely like a pendulum. If now a magnetic field is applied in horizontal direction so that the pendulum now swings through the field, the pendulum will
A
Keep oscillating with the old time period
B
Keep oscillating with a smaller time period
C
Keep oscillating with a larger time period
D
Come to rest very soon
Answer
Come to rest very soon
Explanation
Solution
Emf induces in ring and it will opposes the motion. Hence due to the resistance of the ring all energy dissipates.