ElectroMagnetism Review

What kind of magnet can be turned on and off? (Man-made magnet)

• refrigerator magnet
• electromagnet
• magnetite
• iron

Tags

NGSS.HS-PS2-5

If you wrap more coils around an electromagnet, it will become...(think about the Webquest.)

• brighter
• stronger
• weaker
• invisible

What is inside a toy car that turns the wheels?

• generator
• electric motor
• electromagnet

Tags

NGSS.HS-PS3-3

A device that converts kinetic energy into electrical energy

• A. electric generator
• B. electric motor
• C. electromagnetic induction
• D. electricity

Tags

NGSS.HS-PS3-3

What uses induction to increase or decrease the voltage of alternating current?

• Galvonometers
• Transformers
• Armatures 
• Generators 

Magnetic Field lines....

• Go out of the N side and into the S side
• Go out of the S side and into the N side
• Go out of the N side AND out of the S side
• Go into the N side AND go into the S side

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A moving magnetic field causes current to flow is called...

• Electromagnetic Induction
• Magnetism
• North Pole
• Generator

Tags

NGSS.HS-PS2-5

A tiny region in a magnet where all the atoms are grouped together and their poles are aligned.

• Domain
• North
• South
• Commutator

Spinning electrons themselves are small

• magnets.
• atoms.
• generators.
• joules.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A hydroelectric plant in Niagara Falls sends 3000 V to the transformer in a substation that steps it up to 120000 V for transmission to homes in New York City. If the primary coil contains 2000 turns, how many turns are there in the secondary coil of the step-up transformer?

• 180000 turns
• 8000 turns
• 2000000 turns
• 3600 turns

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-4