[填空题]
The potential differew7kvswmi7k +4f ye/ 5o*0761 g1vp a1b9j ;9ixpm wy nrc7gfeczpkz,snce ($V$) 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 pw 7 u;8 mz lt+53z5wtwltu7/neiga,tand so the uncertainty is the smallest value whi+7;5t e,wt3t nwmw8u lizzlg /ptu5 a7ch 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