Electromagnetic induction

Electromagnetic induction is change in ___________________. 

• surface area
• magnetic poles
• magnetic flux

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

___ Law says that the Induced current is proportional to the change of magnetic flux 

• Lenz'
• Faraday's
• Ampere's

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NGSS.HS-PS2-5

___ Law defines the magnetic field generated by a long straight wire

• Lenz'
• Faraday's
• Ampere's

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

___ Law says that a current produced by an induced emf moves in a direction so that its magnetic field opposes the original change in flux

• Lenz'
• Faraday's
• Ampere's

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NGSS.HS-PS2-5

Find the direction of the magnetic force.

• Into the screen
• Out of the screen
• Right
• Left

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NGSS.HS-PS2-5

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The unit of magnetic flux is the

• Henry
• Tesla
• Faraday
• Weber

The turn is contained in a magnetic field such that the lines of induction of the magnetic field are parallel to the plane of the turn. Which statement is correct?

• An induction current flows clockwise;

• The induction current in the coil flows counter-clockwise;

• The induction current in the coil will occur when the magnetic field induction changes;

• There is no induction current in the coil.

A(n) ___ electric current will create a changing magnetic field.

• existing

• direct

• alternating

• stable

Tags

NGSS.HS-PS2-5

Which coil will have the largest flux?

• A

• B

• C

• D

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NGSS.HS-PS2-5

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