Electricity and Power Quiz

What is the purpose of a negative electrode in a battery?

• To attract electrons

• To repel electrons

What type of electricity do batteries use?

• Solar power

• Direct current

What is the term for the strength of the electrostatic force between two charged objects?

• Magnetic field

• Potential difference

What is the relationship between charged objects in an electrostatic field?

• They repel or attract each other

• They disappear

What is the force present with every charged object?

• Magnetic force

• Electrostatic force

What is the unit of distance in electrostatic attraction?

• Meters

• Centimeters

Which electric field has the strongest force?

• Electric field lines around a negative charge

• Electric field lines with no charge

Free electrons can move at high speed through which of the following?

• Metals, gases, and a vacuum

• Only metals

What happens when negative electrons rest on a surface?

• The surface becomes neutral

• The surface becomes negatively charged

What is the effect of resting electrons on a surface?

• Neutral static electrical charge

• Negative static electrical charge