Energy Analysis - Electric Current

Question 1

What do electrical appliances do?

Answer 1

Transfer energy electrically from chemical stores

Question 2

What do electrical devices do?

Answer 2

Changes electrical transfer to other forms of energy transfer to do a particular job

Question 3

How do you analyse systems where a current flows?

Answer 3

Point 1 (when you turn the kettle on) = high thermal store, low chemical store
Point 2 (when the water boils in the kettle) = low thermal store, high chemical store