Question

A nuclear reactor delivers a power of 10 W. Find fuel consumed by the reactor per hour, if its
efficiency is 20%.

Answer 1

It is given that a nuclear delivers a power of 10W.

we have to find the fuel consumped by the reactor per hour it its efficiency is 20%

actual power = efficiency × power delivery by nuclear reactor

= 20/100 × 10 = 2W

so fuel consumped by the reactor per second = 2 J

⇒fuel consumed by the reactor per hour = 2J × 3600 [ as 1 hour = 3600 sec ]

= 7200 J

Therefore, fuel consumped by the reactor per hour is 7200 J

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