The resistance of a resistor is reduced to half of its initial value. If other parameters of the ele

Question

The resistance of a resistor is reduced to half of its initial value. If other parameters of the electrical circuit remain unaltered, the amount of heat produced in the resistor will become\

Professor PC Thomas Classes · Answer

(b) : As voltage is same, resistance is halved,\ $H=\frac{V^{2}}{R} t$\ So, $H^{\prime}=\frac{V^{2}}{R / 2} t=2 H$ (heat becomes two times).\Concept Applied - Joule's law of  heating, H=I$^2$Rt