[填空题]
The potential differencbx3,dd6 hh*4kg-ibch e 8hrelfmkxg 5sq961mf 30ip 9 zf1/5q9xnqtvg($V$) 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 th zg(5t)m f4vw to5+ghb1j,ko be smallest value whicb o+5kfh5tw)t41zmv, g ( objgh 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