Understanding Electrical Energy

What is electrical energy?

• Energy carried by an electrical current

• Energy stored in batteries

• Energy from solar panels

• Energy from wind turbines

How do electric devices use electrical energy?

• To do work

• To store energy

• To generate heat

• To create light

What happens when a lamp is plugged in and turned on?

• A current runs through it

• It generates heat

• It stores energy

• It creates a magnetic field

What is the function of the filament in a light bulb?

• It glows to produce light

• It conducts electricity

• It stores energy

• It protects the bulb

What protects the filament in a light bulb?

• Glass

• Plastic

• Metal

• Ceramic

What gases are usually contained in the bulb?

• Argon and nitrogen

• Oxygen and carbon dioxide

• Helium and neon

• Hydrogen and methane

What must be provided for electricity to flow in electric devices?

• A complete path

• A partial path

• No path

• An open circuit

How many ways can a bulb be lit using one wire and one battery?