Guided Qu 1. Which part of the circuit was lighted when the electric current is on? 2. What does the electric bulb produce first after you turned the switch on? 3. What did you feel after placing your hand near the light bulb after 5 minutes? What energy transformation is being described in this activity?
2. Due to the heating effect of electric current, the bulb glows when the electric current passes through it. The filament of the bulb gets heated to a high temperature and it starts glowing.
