Question

An electric heater of power 5kW is used for 1 minute. Find the energy supplied by the
heater.

Answer 1

Answer:

1/12 J

Explanation:

p = 5kw

t = 1 min = 1/60

p=energy/time

5= Energy/1/60

Energy =5/60= 1/12

Answer 2

Explanation:

P=energy

TIME

Energy =Power×time

=(3kw) (1min)

=(3×10³ J ) (60 S)

S)

=180×10³

J = 180 KJ