Energy Consumption of a Bulb

The energy used by a 100 W bulb which is on for 10 hours is:

1 kWh

\( 3.6 \times 10^6 \, \text{J} \)

\( 4.8 \times 10^5 \, \text{J} \)

Both (1) and (2)

Solution:

Energy is calculated as \( E = P \times t = 100 \, \text{W} \times 10 \, \text{h} = 1000 \, \text{Wh} = 1 \, \text{kWh} \). In standard SI units, this is \( 1000 \, \text{W} \times 3600 \, \text{s} = 3.6 \times 10^6 \, \text{J} \). Thus, both Options (1) and (2) are correct.

Energy Consumption of a Bulb

Solution:

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