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JEE Main 2023 (31 Jan, Shift 2) · Electrical Power & Heating Effect

Electrical Power & Heating Effect question from JEE Main 2023 (31 Jan, Shift 2)

Q19JEE Main 2023 · 31 JAN · SHIFT 2Easy

Electrical Power & Heating Effect

The $\mathrm{H}$ amount of thermal energy is developed by a resistor in $10\text{ s}$ when a current of $4\text{ A}$ is passed through it. If the current is increased to $16\text{ A}$ , the thermal energy developed by the resistor in $10\text{ s}$ will be:

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Answer: (b)

$H = I^2 R t \propto I^2$ for the same $R$ and $t$ .
$\frac{H'}{H} = \left(\frac{16}{4}\right)^2 = 16$ .
So the answer is (b) $16H$ .

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