Exploring the Forces of Magnetism

What do the lines of a magnetic field represent?

• The path a north pole would follow in the field

• The actual flow of magnetic particles

• The intensity of the magnetic field

• The temperature variation within the magnetic field

What is the principle behind electromagnetic induction?

• A magnetic field can induce an electric current in a wire

• Electric current can generate a magnetic field

• A magnetic field can block electric currents

• Electric currents repel magnetic fields

Tags

NGSS.HS-PS2-5

How does a magnetic force act on a current-carrying conductor?

• It does not affect the conductor

• It heats up the conductor

• It creates a force perpendicular to both the current and the magnetic field

• It reduces the current in the conductor

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What are magnetic domains?

• Regions where the magnetic fields of atoms are aligned

• Small magnets within a magnetic material

• The areas outside a magnet where the magnetic force acts

• The poles of a magnet

Tags

NGSS.MS-PS2-3

Which of the following is an application of electromagnetism?

• Solar panels

• Electric motors

• Batteries

• Optical fibers

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What happens to the magnetic field lines around a bar magnet?

• They go from the south pole to the north pole outside the magnet

• They go from the north pole to the south pole outside the magnet

• They are straight lines perpendicular to the magnet

• They only exist within the magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the result of electromagnetic induction in a coil of wire?

• A constant magnetic field

• A permanent magnet

• An induced electric current

• A reduction in the coil's resistance

Tags

NGSS.HS-PS2-5

What is the effect of a magnetic field on a stationary charged particle?

• It causes the particle to move in a straight line

• It has no effect on the particle

• It causes the particle to accelerate

• It creates an electric current in the particle

Tags

NGSS.HS-PS3-5

How can the strength of an electromagnet be increased?

• By decreasing the number of coils

• By using a weaker core material

• By increasing the current through the coils

• By using a larger battery

Tags

NGSS.HS-PS2-5

What is induced magnetism?

• The creation of a magnetic field by an electric current

• The temporary alignment of magnetic domains in a material

• The permanent magnetization of a material

• The reduction of a magnetic field due to an opposing field

Tags

NGSS.HS-PS2-5