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Symbols of Electric Components

At a constant...

Question

At a constant voltage the heat developed in a uniform wire varies inversely as the length of the wire used.

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Solution

At constant voltage
$p = \frac{V^{2}}{R}$
$p = \frac{{A V}^{2}}{p l} = \frac{e n e r g y}{t i m e}$
energy or heat varies inversely as the length of wire

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