Question

What is the heating effect of electric current? Give a few real-life examples where it is used. 3 Marks

Answer 1

When an electric current flows through a wire, the wire gets heated up. This phenomenon is known as the heating effect of electric current. 1 Mark

Some applications of this effect are:

a) A filament is a thin wire inside a bulb that produces light. When electricity passes through this wire, there is high obstruction to the flow of current. Due to this the filament gets heated, ultimately making a bulb glow. 1 Mark

b) Various other electrical appliances where this principle is used are iron, electric heater, electric geyser, toaster, etc. 1Mark