Topic 2Power /

Question 1

Energy transfer from when there is a change in pd

Answer 1

Energy transferred = charge flow x potential difference

Question 2

Power

Answer 2

Power = potential difference x current

Question 3

Power without pd known

Answer 3

Power = current^2 x resistance

Question 4

What happens when a charge goes through a change in potential difference

Answer 4

Energy is transferred

Question 5

When is the energy rise and fall

Answer 5

Energy is supplied to the charge at the power power source to raise it through a potential
The charge gives up this energy when it falls through any potential drop in components elesewhere in the circuit

Question 6

Potential difference definition

Answer 6

Energy transferred per charge passed

Question 7

What happens when a battery has a bigger pd

Answer 7

Suppliers more energy to the circuit for energy Coulomb of charge which flows around it because charge is higher at the start