Electric Circuits

Front

What is an electric circuit?

Back

An electric circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and a load (like a bulb).

Front

What happens when a switch is opened in a circuit?

Back

When a switch is opened, it breaks the circuit, preventing electric current from flowing, which means devices like bulbs will not light up.

Front

What is the role of a battery in a circuit?

Back

A battery provides the electric current needed to power devices in a circuit.

Front

What is a conductor?

Back

A conductor is a material that allows electric current to flow through it easily, such as copper or aluminum.

Front

What is an insulator?

Back

An insulator is a material that does not allow electric current to flow through it easily, such as rubber or plastic.

Front

What is the purpose of a switch in a circuit?

Back

A switch is used to open or close a circuit, controlling the flow of electric current.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected one after another, so the same current flows through all. In a parallel circuit, components are connected across common points, allowing current to flow through multiple paths.

Front

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

Back

The brightness of bulbs in a series circuit decreases as more bulbs are added because the total resistance increases, reducing the current.

Front

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

Back

The brightness of bulbs in a parallel circuit remains the same when more bulbs are added because each bulb has its own path for current.

Front

What is a load in an electric circuit?

Back

A load is any device that uses electric current to perform work, such as a light bulb, motor, or heater.