RRB Technician Grade 3 practice question
An electric heater rated 2,000 watts is used for 3 hours a day for 30 days. The number of units (kWh) of electricity consumed is
From a RRB Technician Grade 3 Science practice set · Science
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Correct answer: (C) 180
Power = 2,000 W = 2 kW. Energy per day = 2 × 3 = 6 kWh. For 30 days = 6 × 30 = 180 units.
हिंदी में प्रश्न
2,000 వాట్ల విద్యుత్ హీటర్ను రోజుకు 3 గంటల చొప్పున 30 రోజులు వాడితే, ఖర్చయ్యే విద్యుత్ యూనిట్లు (kWh) ఎన్ని?
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सही उत्तर: (C) 180
2 kW × 3 గం. = రోజుకు 6 యూనిట్లు; 30 రోజులకు 6 × 30 = 180 యూనిట్లు.
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