Chapter 5 EM INDUCTION

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

• Lenz'

• Faraday's

• Ampere's

• Ohm's

___ 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

• Ohm' s

Passing a current through a solenoid will produce

• a magnetic field
• an electric field
• a current field
• nothing is produced

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The unit of magnetic flux is the

• Henry
• Tesla
• Faraday
• Weber

Faraday's Law states that the induced emf is proportional to .....

• the current

• the cross sectional area of the coil

• the rate of change in the flux of the coil

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

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NGSS.HS-PS2-5

Name the following law: A moving magnet creates an opposing magnetic field.

• Ampere's Law

• Faraday's Law

• Lenz's Law

• Coulomb's Law

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Which side of the coil above will be north, and which direction will the current go?

• Right; Up the front

• Right; Down the front

• Left; Up the front

• Left; Down the front

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Determine the direction of induced current if the magnetic field is increasing.

• Clockwise

• Counter clockwise

• No induced current

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Determine the direction of induced current if the magnetic field is decreasing.

• Clockwise

• Counter clockwise

• No induced current

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