[填空题]
The potential differp ag0vc,9ig)h 1yuf v1eu2zsd5jo(2 b,dcx 6xcnce ($V$) 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 deg c 59tt1us//itduvt9vice and so the uncertainty is the smallest value which 9/ vctst5iugd9 1ttu /it can 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