Question

What energy changes take place in the figure given here, where a bulb glows with the help of a cell?

• A. Electrical $\to$ light
• B. Electrical $\to$ heat $\to$ light
• C. Chemical $\to$ electrical $\to$ heat $\to$ light
• D. Chemical $\to$ electrical $\to$ light $\to$ heat

Answer 1

The correct option is C Chemical $\to$ electrical $\to$ heat $\to$ light

When the circuit is completed a chemical reaction begins in the battery which sets the electrons in motion towards the positive terminal producing electricity.
The kinetic energy of the moving electrons is converted into heat energy in the filament of the bulb due to the resistance against the flow of electrons.
This conversion of kinetic into heat energy lights the bulb.