Faraday's Law

What is Faraday’s Law of Electromagnetic Induction?

• The magnitude of the induced e.m.f. in a circuit is directly proportional to the magnetic flux.

• The magnitude of the induced e.m.f. in a circuit is directly proportional to the magnetic flux linking the coils.

• The magnitude of the induced e.m.f. in a circuit is directly proportional to the rate of change of magnetic flux.

• The magnitude of the induced e.m.f. in a circuit is directly proportional to the rate of change of magnetic flux linking the coils.

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NGSS.HS-PS2-5

As a magnet approaches a coil, an additional force is being used to accelerate the magnet towards the coil.

Which of the following is a likely observation of the galvanometer due to this additional force?

• The galvanometer will deflect in the opposite direction.

• The galvanometer will deflect less.

• The galvanometer will deflect more.

• The galvanometer will no longer deflect.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following will not increase the deflection on a galvanometer when a magnet is approaching a solenoid?

• Increasing the number of turns in the solenoid.

• Increasing the resistive forces such as air resistance experienced by the magnet.

• Increasing the strength of the magnet.

• Increasing the speed of the magnet.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following will cause the galvanometer to deflect in two different directions?

• Inserting a magnet at different speeds into a solenoid.

• Inserting a magnet into and withdrawing it from a solenoid.

• Inserting a magnet into two solenoids with differing turns.

• Inserting two magnets with differing strength into a solenoid.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

The diagram shows a magnet entering a coil with a galvanometer.

Which of the following options is a possible movement of the galvanometer with respect to the magnet’s movement through the coil?

• When entering: deflected left

  When in the coil: deflected left

  When leaving: deflected left

• When entering: deflected left

  When in the coil: no deflection

  When leaving: deflected left

• When entering: deflected left

  When in the coil: no deflection

  When leaving: deflected right

• When entering: deflected right

  When in the coil: no deflection

  When leaving: no deflection

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5