Electricity

Which of the following is NOT part of an electromagnet?

• Wire
• Iron
• Toothpick
• Power source

Why are metals useful for making electrical wire?

• Metals do not bend.
• Metals hold much heat.
• Metals are insulators.
• Metals are conductors.

Which best describes a parallel circuit?

• Electricity flows along one pathway.
• The flow of electricity comes from more than one source.
• Electricity flows along more than one pathway.
• The flow of electricity comes from more than 1 load.

Which of the following is shown in the picture?

• Electromagnet
• Electric generator
• Electric motor
• Transformer

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.

• True
• False

What charge does a proton have?

• negative (-)
• positive (+)
• neutral or no charge (0)

What charge does an electron have?

• negative (-)
• positive (+)
• neutral or no charge (0)

What is # 3 pointing to in the diagram?

• base contact
• button contact
• support wires
• filament

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass