AP Police Constable practice question
An electric heater rated 2 kW is used for 3 hours a day for 30 days. How many units (kWh) of electricity does it consume?
From a AP Police Constable Science practice set · Science
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Correct answer: (D) 180
Energy = power × time = 2 kW × 3 h × 30 days = 180 kWh. One commercial "unit" of electricity is exactly one kilowatt-hour.
हिंदी में प्रश्न
2 kW సామర్థ్యం గల ఒక విద్యుత్ హీటర్ను రోజుకు 3 గంటల చొప్పున 30 రోజులు వాడారు. అది ఎన్ని యూనిట్ల (kWh) విద్యుత్ను వినియోగిస్తుంది?
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सही उत्तर: (D) 180
శక్తి = 2 kW × 3 గం. × 30 రోజులు = 180 kWh. ఒక యూనిట్ అంటే ఒక కిలోవాట్-గంట.
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