magnetism

Multiple Choice

The place on a magnet where the force it exerts is the strongest is called

• a magnetic pole

• a magnetic field line

• a domain

Multiple Choice

What is the magnetic attraction or repulsion of a magnet called?

• the magnetic domain

• the magnetic field

• the magnetic pole

• the magnetic force

Multiple Choice

What is a major difference between electric charges and magnetic poles?

• Electric charges can exist on their own.

• Magnetic poles can exist on their own.

• There are no differences.

Multiple Choice

What is a magnetic field?

• A force field

• a magnetic field does not exist

• stationary electric charge

Multiple Choice

What is the source of a magnetic field?

• Moving electric charge

• Stationary Electric Charge

• There is no source.

Multiple Choice

Why are not all atoms tiny magnets?

• Because, the spins must be in the same direction.

• Every spinning electron is not a tiny magnet.

• Because, the spins must be in opposite direction.

Multiple Choice

A north pole of the magnet is brought near a south pole

• they will repel

• they will attract

• so? nothing will happen

Multiple Choice

A magnetic domain is

• a cluster of aligned atoms

• a singular aligned atom

• a cluster of non-aligned atoms

Multiple Choice

In order to make an electromagnet, you need

• a magnet, a nail, some wires

• a battery, a nail, and a magnet

• a battery, a coil of wire, and a nail

• a loop of wire, contacts, and a battery

Multiple Choice

The source of all magnetism is

• tiny pieces of iron

• ferromagnetic materials

• moving electric charge

• stationary charge

Multiple Choice

if you break a bar magnet in half

• the poles will seperate

• You will have two complete magnets

• it becomes unmagnetized

Multiple Choice

magnetic fields run from _________ pole to ___________ pole

• North, South

• South, North

• They do not exist

Multiple Choice

Which is NOT a distinguishing feature of an electric generator?

• An electric generator converts mechanical energy into electrical.

• An electric generator converts electrical energy into mechanical energy.

• It generates electricity

• It is based on the principle of electromagnetic induction.

Multiple Choice

What do we call a device that converts electricity into mechanical movement?

• electric charge

• electric motor

• electric current

• electric plasma

Multiple Choice

What do you call a device that converts mechanical movement into electricity?

• electric field

• electric motor

• electric generator

• electric plasma

Multiple Choice

What do you call a device that produces an electric current when a coil of wire is wrapped around an iron core and rotated near a magnet?

• magnet

• car

• generator

• motor

Multiple Choice

What do you call a huge wheel (associated with generators) that rotates when driven by water, wind, or steam?

• Motor

• Pipe

• Turbine

• Magnet