[填空题]
The potential differe))ejn(kez 5g ance ( ps((soi ges*p; x d,-wt;/gvn$V$) 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 djt:m -i 02w 0b6qb(v)epz nzfil izy8;igital device and so the uncertainty is the smallest value whiclvz0: zn)(iq2y e-6 0ijp mb;ziftb w8h 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