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Explain how do you convert moving coile galvanometer into voltmeter.

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Explain how do you convert moving coile galvanometer into voltmeter. 

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For this the galvanometer must be connected in parallel with a high resistance R. in series 

The resistance of the voltmeter is now, RG + R 

Since R >> RG, RG + R ≈ R The scale of the voltmeter is calibrated to read off the p.d across a circuit.  

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