Magnetism and Electromagnetism Quiz

Magnetic field lines around a bar magnet

(a)  

• spread out from one pole and curve around to the other.
• are only perpendicular to the magnet
• cross back and forth over one another.
• are perfectly straight.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Every magnet, regardless of its shape, has two

(a)  

• magnetic poles.
• magnetic charges.
• magnetic fields.
• magnetic needles.

Tags

NGSS.MS-PS2-3

Magnetic poles that are unlike

(a)  

• attract each other.
• repel each other.
• do not interact.
• point in the same direction.

Tags

NGSS.MS-PS2-3

What is one difference between a galvanometer and an electric motor?

• An electric motor causes something to move.

• A galvanometer uses an electric current.

• In an electric motor, the armature spins continuously.

• An electric motor uses electrical energy.

To reverse the direction of current in a motor, current is conducted

(a)  

• through the brushes to the commutator.
• through the armature
• in the direction of rotation.
• through the commutator to the armature.

Tags

NGSS.MS-PS2-3

The type of current produced by a battery is

(a)  

• direct current.
• alternating current.
• magnetic current.
• induced current.

You can increase the strength of an electromagnet’s field by

(a)  

• using a stronger ferromagnetic material for the core.
• decreasing the current in the solenoid.
• decreasing the number of loops in the solenoid.
• winding the coils more loosely.e

Tags

NGSS.MS-PS2-3

As Earth’s magnetic poles move, the magnetic declination in a given location will

(a)  

• change.
• stay the same.
• switch to point south.
• return to zero.

An electric current produces

(a)  

• a magnetic field.
• a magnet.
• a solenoid
• an insulator.

Electric current from a generating plant is

(a)  

• alternating current transmitted at high voltages, but usually used at low voltages.
• direct current transmitted at high voltages, but usually used at low voltages.
• alternating current transmitted at low voltages, but usually used at high voltages.
• direct current transmitted at low voltages, but usually used at high voltages.

Tags

NGSS.MS-PS2-3