Question: What is an electric cell?
Answer: An electric cell is a device which converts chemical energy into electric energy. It has two different metal plates:
1. one is the positive terminal
2. the other is the negative terminal
These plates are kept inside a chemical called electrolyte, which stores the chemical energy.
Question: What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Answer: An electric switch is a simple device which is used to break or complete an electric circuit. Switches are widely used in different electrical or electronic gadgets. A few are:
- Toggle switches used in houses.
- Push-button switches used in microwaves, water pump, mixer etc.
- Joystick switches used in Video Games Controllers. Toy Car etc.
Question: What are the components of an electric circuit?
Answer: In general a circuit has the following components:
- A cell or battery: source of electricity.
- Connecting wires
- Bulb or electric device
- Key or switch
Question: How many terminals are there in an electric cell?
Answer: An electric cell has two terminals; positive and negative. The metal cap is the positive terminal of the cell and the metal disc is the negative terminal.
Question: Using the “conduction tester” on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.
Answer: Since the object allows current to flow and completes the circuit. Due to this bulb begins to glow. It means the object is a conductor of electricity.