IPC Magnetism Review

Which of the following will not cause a magnet to lose its magnetism?

• striking it with a hammer
• cooling it
• dropping it repeatedly on the ground
• heating it

In an unmagnetized object, the domains point:

• in the same direction
• in a north-south direction
• in different directions
• in an east-west direction

The person who first stated that an electric current could be used to produce a magnetic field is:

• Hans Oersted

• Albert Einstein

• Michael Faraday

• William Gilbert

A device that converts electric energy into mechanical energy is called a:

• motor
• generator
• transformer
• galvanometer

A region in which the magnetic fields of atoms are grouped together is called a(an):

• pole
• domain
• force line
• magnetosphere

Which of the following will not strengthen an electromagnet?

• increasing the number of loops of wire around the core
• increasing the current flow
• decreasing the voltage
• all of these

A generator is a device that converts:

• heat energy into electric energy
• electric energy into mechanical energy
• electric energy into heat energy
• mechanical energy into electric energy

Unlike poles of a magnet will:

• attract each other
• repel each other
• cancel out each other
• first attract and then repel each other

In a magnetized object, the domains point:

• in the same direction
• in an east-west direction
• in different directions
• perpendicular to one another

Wrapping a coil of wire around a soft iron core produces a(an):

• generator
• motor
• electromagnet
• transformer