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 and 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 electrical current to flow and powering the connected devices.

Front

What is sound energy?

Back

Sound energy is a form of energy produced by vibrating objects, which creates sound waves that can be heard.

Front

What is the role of a resistor in a circuit?

Back

A resistor limits the flow of electric current in a circuit, helping to control the voltage and current levels.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all. In a parallel circuit, components are connected across common points, allowing multiple paths for current.

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 purpose of a battery in a circuit?

Back

A battery provides the electrical energy needed to drive current through the circuit.

Front

What happens when a circuit is open?

Back

When a circuit is open, there is a break in the loop, preventing current from flowing and devices from operating.

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 decrease 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 significantly affect the brightness of the other bulbs, as each has its own path for current.