A coil spins in a magnetic field. Of the following which causes an increase in the induced EMF in the coil?

Removing the coil from the magnetic field

Keeping the flux at a constant rate

Decreasing the number of turns of wire in the coil

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.

What would happen if I move a bar magnet in and out of a coil of copper wire?

Electric current will flow through the wire

Electric current would disappear

It would produce a gravitational field

Faraday’s law states that an induced emf is proportional to

the rate of change of the magnetic flux

The rate of change of the magnetic field

the rate of change of the electric field

the rate of change of the electric flux

A permanent magnet is quickly introduced into the center of an aluminum closed ring. With this ring ...

will be attracted to the magnet;

it will start to rotate about an axis passing through its center.

The turn is contained in a magnetic field such that the lines of induction of the magnetic field are parallel to the plane of the turn. Which statement is correct?

There is no induction current in the coil.

An induction current flows clockwise;

The induction current in the coil flows counter-clockwise;

The induction current in the coil will occur when the magnetic field induction changes;

HW: Magnetic Induction

Authored by TavishHill TavishHill

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the direction of the induced magnetic field?

Left

Right

Down

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the direction of the induced magnetic field?

Left

Right

Down

Tags

NGSS.HS-PS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Name the following law: A changing magnetic field creates an electric current in a coil.

Ampere's Law

Faraday's Law

Lenz's Law

Coulomb's Law

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Ampere's Law

Faraday's Law

Lenz's Law

Coulomb's Law

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

Clockwise

Counter clockwise

No induced current

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

Clockwise

Counter clockwise

No induced current

Tags

NGSS.HS-PS2-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Determine the direction of the current across the resistor ab when coil B is brought closer to coil A while the switch S is closed.

a to b

b to a

no current

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

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HW: Magnetic Induction

What is the direction of the induced magnetic field?

What is the direction of the induced magnetic field?

Name the following law: A changing magnetic field creates an electric current in a coil.

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

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

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

Determine the direction of the current across the resistor ab when coil B is brought closer to coil A while the switch S is closed.

Predict the direction of induced current in a metal ring when the ring is moved towards a straight conductor with constant speed v. The conductor is carrying current I in the direction shown in the figure.

A coil spins in a magnetic field. Of the followingwhich causes an increase in the induced EMF inthe coil?

Voltage can be induced in a wire by

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A coil spins in a magnetic field. Of the following
which causes an increase in the induced EMF in
the coil?