[填空题]
The potential differenc-g*h64gdxeg 1 th cv:8x)d hhoe (tkjb )bmz6 oy2x ldbh9;5 gqi( z--li($V$) across a resistor is measured with a digital voltmeter to be $0.10 \; V$ . What is the percentage uncertainty in $V^2$ ? % (please only input numerical value without units and without the $\pm$ symbol.)
参考答案: 20.00
本题详细解析: The voltmeter is a digital devisp fx6/rkqt:r; pe93uce and so the uncertainty is the smallest value which it csukx3r / ;q e:frtp9p6an record, $0.01 \mathrm{~V}$. This is a $10 \%$ uncertainty on the $0.10 \mathrm{~V}$ measurement. The uncertainty in $V^2$ will be twice this, giving $20 \%$.
Post time 2024-8-21 21:38:19