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, gw v( jx)-/nzf1qcyw resistance of 40.09y,)* e ddjx)pj qm012ghvt-zxp x9vy $\Omega$ 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:
暂无
| 
