Understanding Electricity and Circuits

What is a battery used for in a circuit?

• A battery is used to supply electrical energy in a circuit.

• A battery is used to amplify signals in a circuit.

• A battery is used to cool down components in a circuit.

• A battery is used to store data in a circuit.

Identify the component that controls the flow of electricity.

• Resistor

• Capacitor

• Switch

• Transformer

What does a light bulb do in a circuit?

• A light bulb converts electrical energy into light energy in a circuit.

• A light bulb acts as a resistor to limit current in a circuit.

• A light bulb generates heat energy without producing light.

• A light bulb stores electrical energy for later use.

Explain what happens when a circuit is closed.

• A closed circuit prevents electric current from flowing.

• A closed circuit only works with batteries.

• A closed circuit allows electric current to flow.

• A closed circuit creates a short circuit automatically.

What is the purpose of a switch in a circuit?

• To increase the voltage in a circuit.

• To convert AC to DC in a circuit.

• To control the flow of electricity in a circuit.

• To store electrical energy for later use.

Name a component that can store electrical energy.

• Inductor

• Resistor

• Capacitor

• Transformer

How does electricity flow in a circuit?

• Electricity only flows when there is no voltage present.

• Electricity flows in an open circuit without any resistance.

• Electricity flows in a closed circuit driven by voltage, allowing electrons to move through conductors.

• Electricity moves in a straight line without any conductors.

What is the role of wires in a circuit?

• Wires conduct electricity and connect components in a circuit.

• Wires generate electricity when connected to a power source.

• Wires are used to insulate components from each other.

• Wires store electrical energy for later use.

What safety equipment should you use when working with electricity?

• Metal tools

• Insulated gloves, safety goggles, non-conductive tools, rubber-soled shoes.

• Cotton gloves

• Safety helmets

Why is it important to not touch exposed wires?

• Exposed wires are only dangerous in wet conditions.

• It is important to not touch exposed wires because they can cause electric shock or fires.

• Exposed wires are safe to touch if they are dry.

• Touching exposed wires can improve electrical conductivity.