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An electric heater is rated 1500 W. Then the work done by it in an hour is

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150 J

15000 J

$54 \times 10^{5} J$

$54 \times 10^{6} J$

answer is C.

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Detailed Solution

$power p = 1500 W , Time t = 1hr = 3600 s$

$p = \frac{W}{t} \Rightarrow W = p \times t$

$= 1500 \times 60 \times 60s$

$= 5400000$

$W = 54 \times 10^{5} J$

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