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प्रश्न
An electric heater is rated 220 V, 550 W. Calculate the electrical energy consumed in 3 hours?
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उत्तर
Energy consumed in 3 hrs = `(550 xx 3)/1000` = 1.65 kWh
= 1.65 × 3600 = 5940 kJ.
संबंधित प्रश्न
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(a) volt
(b) joule
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(d) watt
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