2) Electric Circuits (pages 8 & 9)

What is an electric circuit?

• A set of connected components where electricity flows
• A storage for electricity
• A tool for measuring current
• A type of light bulb

Answer explanation

An electric circuit is a path with connected components that allows electricity to flow.

Which device provides the energy for electrons to move?

• Generator
• Switch
• Resistor
• Bulb

Answer explanation

A generator provides the energy to move electrons through the circuit.

Which of these is a type of generator?

• Battery
• Push button
• Fuse
• Resistor

Answer explanation

Batteries are a type of generator that uses chemical processes to create electricity.

Photovoltaic cells use energy from which source?

• The Sun
• Wind
• Water
• Coal

Answer explanation

Photovoltaic cells convert sunlight into electrical energy.

What type of energy does a motor produce?

• Mechanical
• Thermal
• Acoustic
• Light

Answer explanation

Motors transform electrical energy into mechanical energy, which creates movement.

What type of energy does a bulb produce?

• Light
• Heat
• Motion
• Sound

Answer explanation

Bulbs use electrical energy to produce light.

What does a fuse do in a circuit?

• Protects it from too much current
• Increases the voltage
• Generates electricity
• Makes sound

Answer explanation

A fuse stops the current when it becomes too high, protecting the circuit.

What is the function of a switch?

• Control the flow of current
• Produce electricity
• Light up the bulb
• Cool down wires

Answer explanation

A switch controls whether electricity can flow or not.

What happens when the current is too high?

• A protection component interrupts it
• A switch turns on
• A resistor increases
• A generator stops

Answer explanation

Protection components like fuses stop dangerous high currents.

What do conductors do?

• Allow current to flow
• Stop electricity
• Produce sound
• Transform light

Answer explanation

Conductors let electricity pass through them, allowing the circuit to work.