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Physics · WORK, ENERGY AND POWER
हिन्दीAn electric heater rated at \( 1500\text{ W} \) is operated continuously for 8 hours daily for 30 days. The electrical energy consumed in this period expressed in Joules is:
Correct answer · Option 3
\( 1.296 \times 10^9\text{ J} \)
Explanation
Total time \( t = 8 \times 30 \times 3600\text{ s} = 864000\text{ s} \). Energy \( E = P \times t = 1500 \times 864000 = 1.296 \times 10^9\text{ J} \) (or \( 360\text{ kWh} = 360 \times 3.6 \times 10^6 = 1.296 \times 10^9\text{ J} \)).
