EM Induction

When there is a change in the magnetic field in a closed loop of wire

• (a) a voltage is induced in the wire
• (b) current is made to flow in the loop of wire 
• (c) electromagnetic induction occurs
• (d) all of these

Tags

NGSS.HS-PS2-5

Thrust a magnet into a coil of wire. While the magnet is being moved toward the coil 

• (a) becomes an electromagnet
• (b) has a current in it
• (c) both of these 
• (d) neither of these

Tags

NGSS.HS-PS2-5

 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,

• a. one-half as much voltage is induced.
• b. the same voltage is induced.
• c. twice as much voltage is induced.
• d. four times as much voltage is induced.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A generator is used to light a bulb.  Energy for lighting the bulb actually comes from a

• coil or wire
• mechanical intput to the generator
• magnet in the generator
• plug where the generator is connected to the wall

Tags

NGSS.HS-PS3-3

A device that converts mechanical energy into electrical energy

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

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NGSS.HS-PS3-3

The process of creating a current in a circuit by changing a magnetic field

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

Tags

NGSS.HS-PS2-5

What is created when a magnet moves through a coil of wire?

• A. an electromagnet
• B. a ferromagnet
• C. a solenoid
• D. an electric current

Tags

NGSS.HS-PS2-5

Who discovered electromagnetic induction?

• Hans Christian Orsted
• Michael Faraday
• James Maxwell
• Heinrich Hertz

Tags

NGSS.HS-PS2-5

A magnet is moved in and out of a coil of wire connected to a high-resistance voltmeter. If the number of coils doubles, the induced voltage 

• quadruples
• doubles
• is the same
• halves

A device consisting of a coil that is mechanically rotated in a stationary magnetic field is called

• a transformer
• a motor
• a generator
• a dipole