Unit 2, Lesson 3 Quiz Review: Electromagnetic Force

An electromagnet is made by wrapping many turns of wire around an iron bar and causing a current to flow through the wire. How would increasing the electrical current affect the electromagnet?

• It would make the magnetic field of the magnet weaker.

• It would make the magnetic field of the magnet stronger.

• It would decrease the flow of electricity in the iron bar.

• It would increase the flow of electricity in the iron bar.

Tags

NGSS.MS-PS2-3

The picture is an example of an:

• Electric generator

• Electromagnet

• Electric nail

• Electric power cell

Tags

NGSS.MS-PS2-3

If a current is running through a straight wire, where is the magnetic field created by that current strongest?

• Close to the wire

• Far from the wire

• Where the wire is connected to the battery

• Everywhere has the same magnetic field

Tags

NGSS.MS-PS2-3

Making an electromagnet stronger would involve all of the following except for _______________________.

• adding more current in the wire

• making the loops wider

• packing the loops tighter together

• having more loops

Tags

NGSS.MS-PS2-3

Passing a current through a solenoid will produce

• a magnetic field
• an electric field
• a current field
• nothing is produced

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Electromagnetism is the interaction between _____ and _____.

• Magnets and Light Bulbs

• Open circuits and Closed circuits

• Potential energy and Kinetic energy

• Electric charges and Magnets

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The area closest to the coils of wire has a _____ magnetic field.

• less dense

• strong

• weak

Tags

NGSS.MS-PS2-3

What kind of magnet can be turned on and off?

• refrigerator magnet
• electromagnet
• magnetite
• iron

a magnet created by wrapping a current-carrying wire around a ferromagnetic core

• electromagnet

• electric motor

• electric generator

• electromagnetism

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following statements best explains the main difference between magnetic fields in straight wires and magnetic fields in a loop of wire?

• Shaping a wire into a loop allows the current and magnetic field to remain off at all times.
• Shaping a wire into a loop allows the current and magnetic field to remain on at all times.
• Shaping a wire into a loop can increase the strength of the magnetic field within the loop.
• Shaping a wire into a loop can decrease the strength of the magnetic field within the loop.

Tags

NGSS.MS-PS2-3