A galvanometer has an internal resistance of 32 and deflects full scale for a 55-A current.

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A galvanometer has an internal resistance of 32 Ω and deflects full scale for a 55-μA current. Describe how to use this galvanometer to make
(a) An ammeter to read currents up to 25 A,
(b) A voltmeter to give a full-scale deflection of 250 V.

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Physics Principles with Applications

ISBN: 978-0321762429

7th edition

Authors: Douglas C. Giancoli

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Question Posted: Oct 05, 2017 08:28 AM

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A galvanometer has an internal resistance of 32 and deflects full scale for a 55-A current.

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a To make an ammeter a shunt resistor must be placed in parallel with the galvanometer The voltage ...View the full answer

Physics Principles with Applications

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