Electromagnetic Induction

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

• Lenz'
• Faraday's
• Ampere's

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___ 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 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

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

• brighter
• stronger
• weaker
• invisible

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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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Find the direction of the magnetic force.

• Down
• Into the screen
• Out of the screen
• Up

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

In 1831 who discovered electromagnetic induction?

• Thomas Edison
• Nikola Tesla
• Michael Faraday

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A 4.0 m long cord is lying perpendicular to Earth's magnetic field of 5.6X10^-5 T. If the cord is carrying a current of 11.0 A, what magnetic force is acting on the cord?

• 2.03X10^-5 N
• 0.002464 N
• 2.46X10⁷ N
• 7.86X10⁵ N

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NGSS.HS-PS2-5

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Passing a current through a solenoid will produce

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

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NGSS.HS-PS3-5

The unit of magnetic flux is the

• Henry
• Tesla
• Faraday
• Weber