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Why non magnetic metallic frame is used in moving coil galvanometer?

Why non magnetic metallic frame is used in moving coil galvanometer?
 

Grade:12

2 Answers

Arun
25763 Points
one year ago
Current passes through the coil of a galvanometer, causing a magnetic field, similar to what happens in an electromagnet. The field pulls the coil towards a permanent magnet attached to the frame of the galvanometer. There is a spring attached to the coil which controls how far it can move, which depends on the current. The frame has to b aluminum or some other non-magnetic material so as not to screw up the intensity of the magnetic fields, which would mess up the accuracy of the galvanometer.
Vikas TU
14149 Points
one year ago
Dear student 
Please refer the following ink 
Good Luck 

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