moving coil galvanometer of resistance 10 ohms produces full scale deflection. When a current of 25 mA is passed through it. Describe showing full calculations, how will you convert the galvanometer into (i) a voltmeter reading upto 120 V and (ii) an ammeter reading upto 20A.
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Explanation:
Here, G = 10 Ω , ig = 25 mA = 25 × 10–3 A To convert the galvanometer in to voltmeter reading up to 120 V: To convert a galvanometer into voltmeter of range V, a large resistance R has to be connected in series to it.The value of R is given by ←
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