Question

An electric iron rated 750 W is operated for 2 hours/day. How much energy is consumed by the electric iron for 30 days?

Answer 1

Given: $P=750W$

Total time for which the electric iron worked, $t=2\times 30=60$ hours

Energy consumed $=P\times t$

$=750\times 60\times 3600$

$=1.62\times {10}^8$ J