Fs7 Electricity Physics Worksheets Page 12
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15Module 12
Attempt the following question and then view the module.
The power circuit of an office is supplied at 240 Volt and has the following appliances connected to
it.
4 heaters 3000W for 5 hours
1 kettle 2000W for 0.5 hours
5 computers 1000W for 6 hours
If the charge per unit is 7p, What would be the total charge for the day?
What would be the resistance of each item and what would be the total effective resistance of the
whole circuit?
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