An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?

owolabimoses98

9 years ago

p=Iv

P=4*250

P=1000w

convert to kw

P=1000/1000= 1kw

1*10*5= N50

Peroxide23

5 years ago

power=current x time
p =250x4
p=1,000w

convert to kilowatt=1,000/1,000=1kw

energy consumed=power x time
=1x5
=5kw/h
cost at 10 kobo per kilowatt=10x5
=50kobo(B)

Ismaeel12345

2 years ago

There's just the answer without the explanation
Physics really needs explanation you know