A potentiometer wire of length \( \mathrm{L} \) and a resistance \( \mathrm{r} \) are connected ... VIDEO
A potentiometer wire of length \( \mathrm{L} \) and a resistance \( \mathrm{r} \) are connected in series with a battery of e.m.f. \( \mathrm{E}_{0} \) and a resistance \( r_{1} \). An unknown e.m.f. \( E \) is balanced at a length 1 of the potentiometer wire. The e.m.f. E will be given by:https://bit.ly/YTAI_PWAP https://www.pw.live
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