Intro to Magnetism

A charged particle in motion creates a (n _____.

• electrostatic charge

• magnetic field

• negative charge

• positive charge

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The term electromagnetic induction refers to the production of:

• a magnetic field

• a static charge

• an electric current

• an electromagnet

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The intrinsic property of electrons which can cause them to have a magnetic moment is known as _____.

• electron spin

• magnetic induction

• magnetic force

• unified field theory

What type of material would produce the strongest electromagnet if it were used as a core? (A core in this context is the material that is wrapped in wire)

• copper

• aluminum

• wood

• iron

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What is the SI unit of magnetic field strength?

• ohm

• tesla

• dipole

• ampere

What type of material can be made magnetic (and will later stay magnetic after being removed from the field) when placed in an external magnetic field?

• diamagnetic

• paramagnetic

• nonmagnetic

• ferromagnetic

When a group of dipoles (or magnetic moments) are aligned, they create _____.

• a paramagnetic material

• a north pole

• a magnetic domain

• a south pole

An electron moving in a conductor

• causes the conductor to bend.

• produces a magnetic field in the conductor.

• causes the conductor to behave as a bar magnet.

• produces a magnetic field perpendicular to the conductor.

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The physical laws of magnetism:

• include the conversion of electricity.

• include the conservation of magnetism

• require that there be south pole for every north pole but only for magnets of certain shapes.

• require that there be a south pole for every north pole.

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If you wrap more coils around an electromagnet, it will become...

• brighter
• stronger
• weaker
• invisible

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