the heating element of a coffee maker operates at 120 V and carries a current of 2 A. Assuming that the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat .500 kg of water from room temperature 23 degrees C to the boiling point.

Answer 1

heat= power*time=120*2*time

but heat also = .500kg(cwater)(77)

set the equal, solve for time.