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umka2103 [35]
3 years ago
6

A ceiling fan uses 0.45 kWh of energy in 6 hours. What is the power rating of the fan?

Physics
1 answer:
Fynjy0 [20]3 years ago
7 0
The power is defined as the energy used divided by the time :
P= \frac{E}{t}
where E is the energy and t the time.
In our problem, the energy used is E=0.45 kWh=450 Wh while the time is t=6 h, so the power used by the fan is
P= \frac{E}{t}= \frac{450 Wh}{6 h}=75 W

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