5C/4G CCA Exam Review

The process of producing an electrical current by moving a magnet in and out of a coil of wire is called _____.

• Magnetic deduction

• Electromagnetic induction

• Magnetic reduction

• Magnetic production

Tags

NGSS.HS-PS2-5

An electric motor is a device that converts _____.

• Mechanical energy to electrical energy

• Magnetic fields in the motor

• Magnetic poles in the motor

• Electrical energy to mechanical energy

Tags

NGSS.MS-PS3-5

The strength of the energy field around a magnet or electromagnet depends on _____.

• Gravity

• Velocity

• Distance

• Mass

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Electromagnetism is best described as:

• The naturally occurring magnetic field found in some objects.

• A property of permanent magnets.

• The magnetic field produced by running a current (electricity) through a wire.

• None of the above.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What effect does increasing the number of loops in the wire have on an electromagnet?

• It increases the strength of the magnetic field.

• It causes it to become a permanent magnet.

• It has no effect on the electromagnet.

• It decreases the strength of the magnetic field.

What effect does increasing the current (adding more batteries) in the wire have on an electromagnet?

• It increases the strength of the magnetic field.

• It causes it to become a permanent magnet.

• It has no effect on the electromagnet.

• It decreases the strength of the magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If you reverse the direction of current flow (flip the battery) in an electromagnet, what happens?

• A short circuit occurs.

• The magnet is neutralized.

• The strength of the magnetic field increases.

• The north and south poles are reversed.

There is a repulsive force between two charged objects when:

• They have opposite charge

• They have the same number of protons

• The have the same charge

• They have the same number of electrons.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Electrical force varies depending on the:

• Amount of charge and distance between charged objects.

• Amount of charge and mass of charged objects.

• Height and mass of charged objects.

• Mass and distance between charged objects.

Tags

NGSS.MS-PS2-3

There is an attractive force between two charged objects when:

• They have the same number of electrons.

• The have the same charge

• They have the same number of protons

• They have opposite charges

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5