Circuits

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow, enabling devices like bulbs or bells to operate.

Front

What happens in a circuit when a switch is closed?

Back

When a switch is closed, it completes the circuit, allowing current to flow and powering the connected devices.

Front

What is the function of a light bulb in a circuit?

Back

A light bulb converts electrical energy into light energy when current flows through it.

Front

What is the role of a bell in an electrical circuit?

Back

A bell acts as an indicator or alerting device that produces sound when current flows through it.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so current flows through each component sequentially. In a parallel circuit, components are connected across common points, allowing current to flow through multiple paths.

Front

What is the effect of adding more bulbs in a series circuit?

Back

Adding more bulbs in a series circuit increases the total resistance, which can reduce the brightness of each bulb.

Front

What is the effect of adding more bulbs in a parallel circuit?

Back

Adding more bulbs in a parallel circuit does not affect the brightness of the other bulbs, as each bulb has its own path for current.

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), expressed as V = IR.

Front

What is the purpose of a fuse in a circuit?

Back

A fuse protects the circuit by breaking the connection if the current exceeds a certain level, preventing damage to components.

Front

What is electrical resistance?

Back

Electrical resistance is the opposition to the flow of electric current, measured in ohms (Ω).