Electrical Systems and Circuits

Evelyn is conducting an experiment to understand how electricity works. She learns that the flow of electrons is crucial in creating current electricity. What is the role of the electron in current electricity?

• It stores energy

• It generates charge and current electricity

• It generates heat

• It acts as a conductor

Aiden is working on a science project where he needs to explain the flow of electricity. He comes across the term 'conductor' and wonders what it means.

• A device that stores energy

• A type of battery

• A material that opposes current

• A material that allows electrons to move "freely"

During a home renovation, Zoe noticed that the lights in her living room kept flickering. Concerned about the safety of her electrical system, she decided to investigate. What is the function of a fuse in a circuit?

• To measure voltage

• To prevent overheating

• To increase current flow

• To store electrical energy

What does an ammeter measure?

• Voltage

• Current strength

• Resistance

• Power

What is the difference between a cell and a battery?

• Both are the same

• A cell is a single unit, while a battery is a group of cells

• A battery is a single unit, while a cell is a group of batteries

• A cell stores energy, while a battery does not

During a home renovation, Sophia is installing new lighting in her living room. She needs a way to control the lights easily. What is the purpose of a switch in this circuit?

• To measure current

• To open or close the circuit

• To increase voltage

• To convert energy

In a science lab, Liam is using a voltmeter to check the electrical setup of a circuit. What does the voltmeter measure?

• Energy

• Current

• Resistance

• Potential difference

What is a series circuit?

• A circuit with multiple paths for current

• A circuit that uses batteries only

• A circuit with components connected end to end

• A circuit that cannot be opened

What is the function of a resistor?

• To increase voltage

• To measure current

• To oppose electrical current

• To store energy

Avery is building a simple circuit for a science project. She needs to understand what powers her circuit. What is the energy source of a circuit?

• A resistor

• A switch

• A cell or battery

• A conductor