Source: Extra Practice
Imagine you are building a simple electric circuit to make a bulb glow. List the essential components you would need and briefly describe the role of each component.
Model Answer
To make a simple electric bulb glow, the essential components needed are:
- Electric Cell (or Battery): This is the source of electrical energy. It provides the electric current that flows through the circuit.
- Electric Bulb: This is the device that converts electrical energy into light and heat. It glows when current passes through its filament.
- Connecting Wires: These are made of conductive material (like copper) and provide the pathway for the electric current to flow from the cell, through the bulb, and back to the cell.
- Switch: Although not strictly essential for the bulb to glow immediately, a switch is a very important component for practical circuits. Its role is to control the flow of electricity by making (closing) or breaking (opening) the circuit, allowing us to turn the bulb on or off as needed.
Explanation
Checks understanding of the basic components required for a functional electric circuit. Evaluates the ability to list essential components and correctly describe their individual roles in making the bulb glow. Inclusion of the switch and its role is a bonus for a complete answer.