magnetic induction

Electro motive force induced by motion of conductor across magnetic field is called

• EMF

• motional EMF

• rotational EMF

• static EMF

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According to the Lenz's law, if you pull the magnet away, then the induced current will

• change the pull

• go with pull

• oppose the pull

• both a and b

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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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Voltage can be induced in a wire by

• a. moving the wire near a magnet.
• b. moving a magnet near the wire.
• c. changing the current in a nearby wire.
• d. all of these

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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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What is the direction of the induced magnetic field?

• Left
• Right
• Up
• Down

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What is the direction of the induced magnetic field?

• Left
• Right
• Up
• Down

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

• brighter
• stronger
• weaker
• invisible

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In 1831 who discovered electromagnetic induction?

• Thomas Edison
• Nikola Tesla
• Michael Faraday

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

• the current 
• the cross sectional area of the coil 
• the rate of change in the flux of the coil

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