NEET 2026 Physics question

A room heater is rated 400 W, 220 V. If the supply voltage drops to 200 V, what will be the power consumed (approximately)?

Answer: (3)

Solution

The heater's resistance is fixed: . At 200 V the power is \dfrac{V^2}{R}\dfrac{200^2}{121}$ ≈ 330.6\ W ≈ 331\

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Question ID VK-104834