The applied potential difference across a given resistor is altered so that the heat produced per second increases by a factor of $16.$ By what factor the applied potential difference changes.
The applied potential difference across a given resistor is altered so that the heat produced per second increases by a factor of $16.$ By what factor the applied potential difference changes.
The heat produced across a resistor is given by $H =\frac{ V ^{2}}{ R } t .$ It is directly proportional to the square of potential. Therefore, if the heat becomes 16 times, the voltage must have been increased $4$ times.
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