[填空题]
The potential differlo m:d)-v:x57ue 3x7j rhgl3piwjf9w ejrsmm39 ,9 ub *cb-zfhq7thj(nce ($V$) 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 smallest j8s;eu 1( sn;sasl na vq1.4yfvalue which it can recordl f(nvsa4u a;ssq;s.1n j1 8ey, $0.01 \mathrm{~V}$. 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