[填空题]
The potential differen 63,gyggwjks4kk7 3skox0j y-cea lsxq x:/s+4yy 1vx2o ($V$) 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 ths,)w/x;7ygdd/+ulr y,q a aya e uncertainty is the smallest value ws l/a x)r,7gd /uya;ydw,qy+a hich 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