| Assertion: Principle of electromagnetic damping is used in dead beat galvanometer. |
| Reason: To damp the oscillation metallic frame is used in the dead beat galvanometer. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: B
Solution :
Electromagnetic damping principle is used in the galvanometer in order to damp its oscillation. The galvanometer made dead beat by winding its coil on a metallic frame made of cooper or aluminium. By doing so eddy currents are produced in the metallic frame, the coil of the galvanometer comes to rest very soon.
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