Question

(a) Why does electric current show heating effect?

(b) Name two appliances that work because of the heating effect of electric current?
[3 MARKS]

Answer 1

Part (a): 2 Marks
Part (b): 1 Marks

(a)
1. When an electric current is passed through the conductor, electrons collide with nearby electrons more frequently, which produce heating effect.
2. The increase in kinetic energy of atoms give rises to heat energy, which gives heating effect when current passes through the conductor.

(b) Toaster and electric geyser work on the heating effect of electric current.