Question:
Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
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Eddy currents in metallic cores are used for damping in galvanometers
Updated On: Mar 19, 2025
- to oscillate the coil in magnetic field for longer period of time
- to produce large deflecting torque on the coil
- to make the magnetic field radial
- to bring the coil to rest quickly
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The Correct Option is D
Solution and Explanation
Step 1: Analyze the role of the metallic core.
- Anon-magnetic metallic core produces eddy currents, which create a damping force.
- This damping force brings the coil to rest quickly.
Final Answer: The function is to bring the coil to rest quickly.
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