(a) Explain the statement "Potential difference between two points is 1 volt". (b) What do the symbols given below represent in an electric circuit? Write one function of each.

Hint

The potential difference between two points is defined as the work done in moving a unit charge from one point to the other. The symbols used in an electric circuit represent different components such as cells, switches, resistors, and meters. Each component has a specific function in the circuit.

Quick oral answer

The potential difference between two points is defined as the work done in moving a unit charge from one point to the other. The symbols used in an electric circuit represent different components such as cells, switches, resistors, and meters. Each component has a specific function in the circuit. For example, a cell or battery produces a potential difference between its terminals, which drives electric current through the circuit. A switch is used to control the flow of electric current in a circuit. A variable resistor is used to control the current in a circuit. A voltmeter is used to measure the potential difference between two points in a circuit. An ammeter is used to measure the current flowing through a circuit. A fuse is used to protect a circuit from excessive current. A bulb is used to produce light when an electric current flows through it. A battery of several cells is used to produce a higher voltage.