Power consumption = 130watts, electricity costs 11p/kwh how much does the applicance cost to run for 1 hour?

Question

And please tell me how you worked it out... I've several things I want to check on. Thanks!

Answer 1

1 KWh means 1000 watts for an hour.

130 watts for an hour would be (divide by 1000) 0.13KWh,

0.13 times 11p = 1.43p

If you run a 130W appliance for 3 hours, it will consume 0.39KWh (or 'units')

working the other way, a 130W appliance will cost 11p for every (1000/130) hours = approximately 7h40m

Answer 2

1 KWH [KILOWATTHOUR]=1000 WATTS of electrical power used in 1 hour. If an appliance is rated at 130 Watts then it will use 130 Watts in 1 hour.
Sooooo, [130/1000] multiplied by 11p = 1.43pence.
Your appliance will cost 1.43 pence to run for one hour.

Answer 3

Hi

kwh = Kilo Watt Hour =
1000 Watts of power user continuously for that hour.

You are only using 130 Watts so if you left it running for 1 hour you would have used 130Watts/Hours divide by 1000 to get 0.13kwh.

at 11p per kwh it would cost you:
11 x 0.13 = 1.43p per hour = £0.0143 per hour.

You could run it for nearly 3 days for about £1.

Definition of a Watt Hour (Wh) can be found at:
http://en.wikipedia.org/wiki/Watt-hour
A kilo Watt is just 1000 Watts.

Answer 4

To use 1000w every hour it would cost you 11p

Power consumption = 130 watts = 130 /1000 kw = 0.13kw

Cost per hour = 11p/kw

Cost to run appliance = Power consumption (kw) x cost per hour (p/kw)
= 0.13kw x 11p/kw = 1.43 p

Answer 5

1.43.p/hr. 1 kw is 1000watts.for 1 hr it costs 11p

130 watts is0.13kw. for 1hr the cost is0.13multiplied by11p

that is1.43p/hr