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Resistance and Power

Q1: How many joules of energy will a 10 W lamp dissipate in one minute?

A 10 joules

B 60 joules

C 600 joules

D 3600 joules

ANS:C - 600 joules

Watt hour = 3600 joules.

Here is 10 Watt and 1 minute so.

10 watt hour = 3600*10 and,

10 watt minute = (3600*10)/60 and answer is 600 joules.



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