A galvanometer with a resistance of 40.0 ? deflects full scale at a current of 2.0 mA. What resistance should be used with this galvanometer in order to construct a voltmeter that can read a maximum of 50 V?
A) 25 k?
B) 27 k?
C) 29 k?
D) 31 k?
E) 35 k?
Answer: A
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