Meters: A galvanometer with a coil resistance of 40.0 ? deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?
A. 25 k?
B. 27 k?
C. 29 k?
D. 31 k?
Answer: A
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