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A typical american family uses 1000 kwh of electricity pro 30 days. you may want to review ( pages 847 - 849) . part a what is the average rms current in the 190 v power line to the house?

Respuesta :

Answer;

 =25.99 ohms

Explanation;

A month has 30 days equivalent to 720 hours.  

1000 kwh is equivalent to 1000000 watt,

Then 1000000 watt divided by 720

 wattage per hour=1388.9  

Therefore;

Wattage/hr divided by line voltage is equivalent av. current

     = 1388.9 W/hr ÷ 190 v

     = 7.31 amperes  

Assuming that the load is 'resistive' and not inductive  

Resistance is voltage divided by current;

  = 190/7.31

 =25.99 ohms

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