Multiple choice

The bulb glows when the electric current passes through it due to

  1. Magnetic effect of electric current

  2. Lighting effect of electric current

  3. Chemical effect of electric current

  4. Heating effect of electric current

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

the glowing of bulb is the heating effect of electric current. The tungsten filament gets heated up and hence glows.