Electromagnetic Induction

Passing a current through a solenoid will produce

• a magnetic field

• an electric field

• a current field

• nothing is produced

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A(n) ___ converts electricity into magnetism.

• electric transformer

• electric generator

• electromagnet

• electric motor

Tags

NGSS.HS-PS2-5

Which pairs of materials could be used to create electromagnetic induction?

• Coiled wire, a magnet

• Coiled wire, a battery

• A magnet, a battery

• None of the above

Tags

NGSS.HS-PS2-5

• All iron nails will fall

• some of the iron nails will fall

• All the nails will remain attracted

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

If you wrap more coils around an electromagnet, it will become...

• brighter

• stronger

• weaker

• invisible

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops,

• one-half as much voltage is induced.

• the same voltage is induced.

• twice as much voltage is induced.

• four times as much voltage is induced.

Can you produce current in a wire with a magnet that is sitting still?

• Yes; having a magnet near a wire is enough to excite the electrons

• No; the magnetic field has to be changing to excite the electrons

• No; magnets cannot create electricity

Tags

NGSS.HS-PS2-5

A __________ is an electrical device that converts AC electricity from one voltage level to another

• transformer

• primary coil

• secondary coil

• center tap

Tags

NGSS.HS-PS3-3

Why is magnetic induction important?

• Electromagnets are very versatile

• Every electric motor uses induction

• Because it's an easy way to produce electricity

• All of the above

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following is a true statement?

• a. Hans Orsted and Michael Faraday competed to be the first scientist to describe electromagnetic induction

• b. Orsted and Faraday were colleagues who worked together to discover electromagnetic induction

• c. Orsted stole Faraday's ideas about electromagnetic induction, leading to controversy d. Faraday built on Orsted's discoveries to describe electromagnetic induction

• d. Faraday built on Orsted's discoveries to describe electromagnetic induction