[填空题]
The potential differenc0v2 u9g0 -42atjgbnwt4d buyj;mmn69lde7w/ho x 3ife ($V$) 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 dev.d)3tsi39df* zrt4ez;bqml: xu i v+e ice and so the uncertainty is the smallest value which it can rq9)zbd eivtlu3z+fi3*er4s :tdm.; x ecord, $0.01 \mathrm{~V}$. 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