Electrical Energy, Fuels, and Generators Quiz

What does a closed circuit allow in an electric circuit?

• The energy source to be turned off

• The electric current to flow

• The wires to be disconnected

• The light bulb to be removed

Why is an energy source important in an electric circuit?

• It provides the path for electrons to move.

• It supplies the energy needed for electrons to flow.

• It acts as a switch to start and stop the current.

• It stops the current from flowing.

What is the definition of electrical energy?

• Energy caused by moving electrons as they flow through a conducting material towards an opposite charge.

• Energy stored in food.

• Energy produced by the sun.

• Energy created by sound waves.

Which material allows electricity to flow through it easily?

• Conductor

• Insulator

• Plastic

• Rubber

What is an insulator?

• A material that electricity cannot easily flow through

• A material that electricity can easily flow through

• A device that produces light

• A type of battery

Which device transforms chemical energy into electrical energy?

• Battery

• Light bulb

• Wire

• Switch

Which device transforms kinetic energy into electrical energy?

• Generator

• Battery

• Light bulb

• Conductor

Why is a closed circuit necessary for electricity to flow?

• It provides a complete path for electrons to move.

• It blocks the flow of electricity.

• It stores energy for later use.

• It changes electrical energy into heat.

What does the diagram represent?

• A closed circuit allowing electricity to flow and light the bulb

• An open circuit with no electricity flow

• A battery charging another battery

• A broken wire

What is the main function of the turbine in the diagram?

• To generate electricity directly

• To convert thermal energy (from the steam) into kinetic energy

• To cool down the steam

• To store electrical energy