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The coil of a tangent galvanometer has 5...

The coil of a tangent galvanometer has 50 turns of mean diameter 20 cm. Find the current required to produce a deflection of `30^(@)`. Given `B_(H)`=0.3 G.

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SL ARORA-MAGNETISM-Based on (i) Earth s Magnetism (ii) magnetic field of a bar magnet
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