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Find current with give volts and kWh

  • Thread starter cwesto
  • Start date
18
0
1. Homework Statement

A typical American family uses 800 kWh of electricity a month.
What is the average current in the 120 V power line to the house?

2. Homework Equations

P=IV

3. The Attempt at a Solution

800kW=800000W
800000=120I
I=[tex]\frac{800000}{120}[/tex]

I'm getting this answer as incorrect. I'm not sure what to do from here. Help Please, Thanks!
 

mgb_phys

Science Advisor
Homework Helper
7,744
11
kWH is a measure of energy = kW (power) * hours (time)
 
18
0
so how do I get from kWh to W?
 

mgb_phys

Science Advisor
Homework Helper
7,744
11
1KWh is 1Kw for 1 hour.
If they use a total of 800 kWhours for the whole month, how much do they use each hour?

hint - how many hours in a month?
 
18
0
approx. 30.44 days in a month 30.44*24=730.56 hours in a month. 800000Wh/730.56h = 1095 W! oh... lol. DUH! Thanks! :D
 

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