Paying For Electricity Flashcards
1
Q
What’s the equation to find electrical power?
A
Electrical power (watt) = current (ampere) x potential difference (volt)
2
Q
What is energy from the mains supply measured in?
A
Kilowatt- hours
3
Q
What’s the equation to find the cost?
A
Cost(p) = power (kilowatts) x time (hour) x cost of 1 kilowatt-hour
4
Q
What’s the equation to find power?
A
Power (watt) = energy used (joule) / time taken (second)
5
Q
What is power?
A
Energy transferred per second and measured in watts.
