Calculating Power & Energy Transferred
Physics: Edexcel IGCSE, topic 2.5.6
Mains Electricity Equations
There are two equations that you need to use that show relationships between different key terms:
Power = current x voltage
Energy transferred = current x voltage x time
Test yourself on Calculating Power & Energy Transferred
Calculate the current given that the power is 10 W and the voltage is 4 V.
Calculate the power given that the current is 5 A and the voltage is 12 V.
Calculate the energy transferred given that the current is 4 A, the voltage is 9 V and the time is 2 s.
Calculate the energy transferred given that the current is 2 A, the voltage is 6 V and the time is 4 s.