Question:
The power dissipated by a uniform wire of resistance $100~\Omega$ when a potential difference of $120~\text{V$ is applied across its ends is}
The power dissipated by a uniform wire of resistance $100~\Omega$ when a potential difference of $120~\text{V$ is applied across its ends is}
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Use $P = V^2/R$ when voltage and resistance are known.
Updated On: Mar 16, 2026
- $122~\text{W}$
- $144~\text{W}$
- $160~\text{W}$
- $200~\text{W}$
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The Correct Option is B
Solution and Explanation
$P = \dfrac{V^2}{R} = \dfrac{(120)^2}{100} = \dfrac{14400}{100} = 144~\text{W}$
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