A resistance coil connected to an external battery is placed inside an adiabatic cylinder fitted with a frictionless pistn and containing an ideal gas. A current $i$ flows through the coil which has a resistance $R$. At what speed must the piston move upward in order that the temperature of the gas remains uchanged? Neglect atmospheric pressure.
A$\frac{{{i^2}m}}{{Rg}}$
B$\frac{{Rmg}}{{{i^2}}}$
C$\frac{{mg}}{{{i^2}}}$
D$\frac{{{i^2}R}}{{mg}}$
Medium
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D$\frac{{{i^2}R}}{{mg}}$
d Applying $C O E$
$i^{2} R t=m g x$
$\Rightarrow \frac{d x}{d t}=\frac{i^{2} R}{m g}$
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