Understanding Circuits

What is a closed circuit?

• A closed circuit allows current to flow continuously.

• A closed circuit is an open loop.

• A closed circuit prevents current from flowing.

• A closed circuit only works with batteries.

What happens in a closed circuit?

• Electrical current flows only in one direction without completing the circuit.

• Electrical current flows continuously through the circuit components.

• Electrical current is blocked by the circuit components.

• The circuit components generate heat without any current flow.

List one component of an open circuit.

• Capacitor

• Switch

• Resistor

• Inductor

What is a common example of an open circuit?

• A battery that is fully charged.

• A broken wire in a circuit.

• A light bulb that is turned on.

• A light switch in the off position.

What is a battery's role in a closed circuit?

• A battery converts mechanical energy into electrical energy.

• A battery stores energy for future use in an open circuit.

• A battery acts as a resistor to limit current flow.

• A battery supplies electrical energy to drive current through a closed circuit.

Name a component that is found in a closed circuit.

• Transistor

• Resistor

• Capacitor

• Inductor

What is the effect of a break in a closed circuit?

• The circuit increases its voltage output.

• The circuit continues to function normally.

• The circuit generates excess heat.

• The circuit stops functioning.

Give an example of a device that uses a closed circuit.

• Resistor

• Light bulb

• Flashlight

• Battery

What is the main difference between open and closed circuits?

• An open circuit allows current flow; a closed circuit prevents current flow.

• An open circuit has more components than a closed circuit.

• An open circuit is always safe; a closed circuit is always dangerous.

• An open circuit is incomplete, preventing current flow; a closed circuit is complete, allowing current flow.

Can an open circuit conduct electricity? Why or why not?

• An open circuit can conduct electricity intermittently.

• Yes, an open circuit can conduct electricity if connected to a power source.

• An open circuit conducts electricity through the air.

• No, an open circuit cannot conduct electricity.