Electrical Circuits

Front

What is a series circuit?

Back

A series circuit is a type of electrical circuit in which components are connected end-to-end, so that the current flows through each component in turn. If one component fails, the entire circuit is interrupted.

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit in which components are connected across common points or junctions, providing multiple paths for the current. If one component fails, the current can still flow through the other paths.

Front

What happens to the brightness of bulbs in a series circuit when more bulbs are added?

Back

In a series circuit, adding more bulbs decreases the brightness of each bulb because the total resistance increases, reducing the current flowing through the circuit.

Front

What happens to the brightness of bulbs in a parallel circuit when more bulbs are added?

Back

In a parallel circuit, adding more bulbs does not significantly affect the brightness of the other bulbs because each bulb has its own path to the power source.

Front

What is the function of a switch in an electrical circuit?

Back

A switch is a device that can open or close an electrical circuit, allowing or stopping the flow of current.

Front

What type of energy conversion occurs in electrical appliances like stoves and toasters?

Back

Electrical energy is converted into heat energy in appliances like stoves, toasters, and ovens.

Front

Identify a good conductor of electricity from the following: Copper, Aluminium, Iron, Wood.

Back

Copper, Aluminium, and Iron are good conductors of electricity, while Wood is an insulator.

Front

What is the charge of an electron?

Back

An electron has a negative charge (-).

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It is expressed as V = I * R.

Front

What is the unit of electrical resistance?

Back

The unit of electrical resistance is the Ohm (Ω).