A Galvanometer with a Coil Resistance Of $40.0 \Omega$ Deflects Full Scale for a Current Of

Multiple Choice

A galvanometer with a coil resistance of $40.0 \Omega$ deflects full scale for a current of $2.0 \mathrm {~mA}$ . What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for $50 \mathrm {~V}$ ?

A) $27 \mathrm { k } \Omega$
B) $29 \mathrm { k } \Omega$
C) $31 \mathrm { k } \Omega$
D) $25 \mathrm { k } \Omega$