Find the energy consumed in $10 h o u r s$ by $5$ devices of power $250 W$ each.

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Solution

Power rating of a device $P = 250 w a t t$

time for which it is used $t = 10$ hours

Since, $e n e r g y = p o w e r \times t i m e$

Energy consumed by one device $E = P \times t = 2500 J$

Energy consumed by five devices $= 2500 \times 5$ $= 12500 J$

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