Calculating power

Question 1

Power formula

Answer 1

power=energy transfer (Work done) / time
power is measured in watts (W)
work done is measured in joules (J)
time is measured in seconds (s)
OR
power is measured on kilowatt-hours(kWh)
energy is measured in kilowatts (kW)
Time is measured in hours (H)

Question 2

Energy transferred formula

Answer 2

Energy transferred (work done) = charge x potential difference
E=Q xV
Energy is measured in Joules(J)
Charge is measured in coulombs(C)
Potential difference is measured in volts(V)