Question

If a 1200w electric iron is used daily for 30 minutes

Answer 1

Answer:216000J

Explanation:W(J/s)= E(J)/time (sec)

E= W×time

Answer 2

Answer:

It is given that,

Power =1200W=1.2kWh

Time = 30 min / day × 30 days =0.5h×30= 15 h

Energy =Power×Time=1.2×15= 18kWh.

Hope it helps!