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Q4: In ballistic galvanometer, the frame on which the coil is wound is non-metallic. It is

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Q4: In ballistic galvanometer, the frame on which the coil is wound is non-metallic. It is

1) To avoid the production of induced e.m.f
2) To avoid the production of eddy currents
3) To increase the production of eddy currents
4) To increase the production of induced e.m.f

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