PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
An electric iron is rated 750 W.
(i) For how many seconds is the iron used if it operates for 40 minutes every day for 15 consecutive days?
(ii) Calculate the total electrical energy consumed during this period in joules.
(iii) Express the same energy in kilowatt-hours.