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A 100-watt light bulb is on for 2 hours a day. What is the energy in watt-hours (Wh) it consumes per day?

A) 100 Wh
B) 200 Wh
C) 300 Wh
D) 400 Wh

Answer :

Final answer:

The energy consumption of a 100-watt light bulb is 200 Wh per day.

Explanation:

The energy consumption of a 100-watt light bulb can be calculated by multiplying its power rating by the time it is on. In this case, the light bulb is on for 2 hours a day, so the energy consumption can be calculated as follows:

Energy consumption = Power × Time = 100W × 2 hours = 200 watt-hours (Wh)

Therefore, the light bulb consumes 200 Wh of energy per day, which means the correct answer is option B) 200 Wh.

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