本题目来源于试卷: Physics Unit19: DC Circuits，类别为 国际高中通用物理
[单选题]
A galvanometer with a coil chnf- . dn0gyog3 ry:3d, xe3mrp9i0fz 3i d l5/)z4s qrc)xagresistance of 40.0 $\Omega$ 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. $25 \; k\Omega$
B. $27 \; k\Omega$
C. $29 \; k\Omega$
D. $31 \; k\Omega$
参考答案: A
本题详细解析:
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