Electromagnetic Induction Recitation

Which of the following best describes electromagnetic induction?

• the production of a capacitance across an electrical conductor in a changing magnetic field

• the production of a potential difference across an electrical conductor in a changing magnetic field

• the production of a resistance across an electrical conductor in a changing magnetic field

• the production of an electromotive force across an electrical conductor in a changing magnetic field

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NGSS.HS-PS2-5

Why is a galvanometer used in an electromagnetic induction setup?

• to help the current to flow across the conductor

• to detect the flow of charges

• to provide charges in the conductor

• to maintain the amount of current in the conductor

Tags

NGSS.HS-PS2-5

An electromagnetic induction setup can be made without using a galvanometer.

• True

• False

Tags

NGSS.HS-PS2-5

Which of the following best describes EMF?

• can be thought of as the difference between two electrical states in an electric field

• the potential difference generated by one or more cells or a changing magnetic field

• depends on the magnitude and resistance of the current

• force that causes an electric charge to flow

Which of the following can be done to increase the induced current in the conductor?

• using a larger magnet

• moving the magnet north pole first instead of the south pole

• moving conductor instead of the magnet

• using a coil instead of a single ring of wire

Tags

NGSS.HS-PS2-5

Which of the following describes Faraday's Law of Induction?

• the amount of chemical change being produced by a current at an electrode-electrolyte interface is proportional to the quantity of electricity used

• the induced current in a circuit is proportional to the rate of change over time of the magnetic flux through that circuit

• the magnitude of induced emf is equal to the rate of change of flux linkages with the coil

• The current induced in a circuit due to a change in a magnetic field is directed to oppose the change in flux and to exert a mechanical force that opposes the motion.

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NGSS.HS-PS2-5

Fleming's left-hand rule should be used if one were to create motion, while Fleming's right-hand rule should be used if one were to create electricity.

• True

• False

A current-carrying conductor can induce current to another conductor.

• True

• False

Tags

NGSS.HS-PS2-5

Fleming's Hand Rules were originated by John Ambrose Fleming, in the late 19th century, as a simple way of working out the direction of motion in an electric motor, or the direction of electric current in an electric generator.

• True

• False

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What will be the direction of the induced current in a generator when the direction of the motion is upwards while the magnetic flux is to the right?

• To the left

• Upwards

• Towards

• Away

Tags

NGSS.HS-PS2-5