[填空题]
The potential differb4pn)k q5 k)dgenc pv m.6,li(ndc1, pm7x ccfws5e ($V$) 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 so the uncertainty is the ,8b 3,9tzgeyaf m2b63t. aqgtrrh/b g smallest value which it chy3.br a beatqrtg ,,b2/6z 8fm39gtgan 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