A galvanometer has an internal resistance of 30 and deflects full scale for a 50- A current.

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A galvanometer has an internal resistance of 30Ω and deflects full scale for a 50-μ A current. Describe how to use this galvanometer to make

(a) An ammeter to read currents up to 30 A, and
(b) A voltmeter to give a full-scale deflection of 250 V.
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