Electric Motors and Transformers

What connects the current source with the commutator of a motor.

• brushes

• armature

• magnet

• commutator

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The rotating part of an electrical motor.

• brushes

• magnet

• commutator

• armature

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Any material that attracts iron and materials that contain iron.

• armature

• brushes

• magnet

• electric motor

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A device that controls the direction of the flow of current through an electric motor

• electromagnet

• Electromagnetism

• solenoid

• commutator

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A coil of wire that produces a magnetic field when carrying an electric current

• electromagnet

• solenoid

• galvanometer

• commutator

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil

• electromagnet

• solenoid

• transformer

• motor

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A device that uses an electromagnet to detect small amounts of current

• brushes

• solenoid

• galvanometer

• transformer

Tags

NGSS.HS-PS2-5

Device that uses electromagnetic induction to change the voltage of electric current.

• thermometer

• galvanometer

• electric transformer

• electric motor

Tags

NGSS.HS-PS2-5

A device that decreases the voltage of an alternating current is called a(n)

• step down transformer

• step up transformer

• compass

• solenoid

The number of loops in the primary and secondary coils is 100 and 350 respectively. The primary voltage is 200V. What is the voltage in the secondary coil?

• 400 V

• 500 V

• 600 V

• 700 V