PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
An electric heater is marked "1.2 kW".
(i) Express its power in watts.
(ii) Convert this power to joules per second.
(iii) A household circuit can safely supply at most 3kW. How many such heaters can be connected to the circuit at one time without exceeding the limit? Show your calculations.