[填空题]
The potential differencz;(ws83 x.sr3dhs t(f.xmtf ze ae,r*3re)/7z3 qlo ead hjuh1 ($V$) 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 device and sqb n 3+xd4ka/bbi1hbb7wk 9q 4o the uncertainty is the smallest value which it can record kb/ bq79 +nxbw34h1ib4dkbaq, $0.01 \mathrm{~V}$. 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