Electrical Energy Transfers

Question 1

What does the amount of energy an appliance transfers depends on?

Answer 1

How long the appliance is on for
The power rating of the appliance

Question 2

How do appliances transfer energy electrically

Answer 2

Through either batteries or AC mains

Question 3

Examples of everyday appliances

Answer 3

Vacuum cleaner transfers energy electrically from the aAC mains to the kinetic energy stores in the motor

Kettle transfers energy from the AC mains electrically to the thermal energy stores of heating element inside

Question 4

What happens when a charge flows through a circuit

Answer 4

Work is done. The amount of energy transferred can be calculated - energy transferred = power x time
Or
Energy transferred = charge x p.d

Question 5

Power rating

Answer 5

Every electrical appliance has a power rating - tells you how much energy it needs to work.
Eg - a High power appliance uses more energy in less time compared low power appliance