Electricity and Magnetism-Unit Review

What exerts the force that causes other electric charges to move?

• electrical poles
• the electric field
• insulators
• conductors

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Elements that are shiny and good conductors of electricity are _____.

• colloids
• metalloids
• metals
• nonmetals

Electrical current is...

• moving protons
• moving electrons
• measured in volts
• measured in ohms

Tags

NGSS.HS-PS3-5

This is called an __________________.

• bomb
• circuit
• electromagnet
• coil

The plastic covering on wires is there to:

• Provide a conductor for electrical energy to flow.
• Provide an insulator so that electrical energy will not pass outside of the wires.
• Provide a conductor so that electrical energy can NOT flow.
• Provide an insulator so that electrical energy can flow.

What causes an electric current in a wire?

• Electrons build up in the wire and create a charge
• Electrons move because of heat.
• Electrons flow because of electrical attraction and repulsion.
• Electric fields cause atoms to move in the wire.

Which of the following best describes this picture?

• Pipes and stuff
• Magnet
• Electromagnet
• Resistor

What happens to the strength of an electromagnet as you add more coils around it?

• Increases
• Decreases
• Stays the same
• Stops completely

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

As the resistance of a circuit increases, the current will

• increase
• decrease
• stay the same

What causes an electric current in a wire?

• Electrons build up in the wire and create a charge
• Electrons move because of heat.
• Electrons flow because of electrical attraction and repulsion.
• Electric fields cause atoms to move in the wire.

Tags

NGSS.HS-PS3-5