A heating element of a hot plate, on an electric
cooking range, draws 12A from 240V supply. How
many kWh of energy will be consumed in one hour
and 15 minutes:
(1) 1.2 (2) 3.6
(3) 6.0 (4) 7.2
Answers
Answered by
5
W= V x I
= 240 x 12
= 2880
= 2.88 kW
Power consumed in 1 hr and 15 min:
- power consumed in 1 hr= 2.88 kWh
- power consumption in 15 min(= 0.25 hr)
= 2.88 x 0.25 kWh
= 0.72 kWh
TOTAL POWER CONSUMPTION = 2.88+0.72
= 3.6 kWh
= 3.6 unit
Similar questions