Inducing Current in Wire Loops (21 Do Now)

What is the principle called that explains how a changing magnetic field can induce an electric current in a wire loop?

• Ohm's Law

• Faraday's Law of Electromagnetic Induction

• Newton's Third Law

• Coulomb's Law

Which of the following factors can affect the magnitude of the induced current in a wire loop?

• The color of the wire

• The area of the wire loop

• The temperature of the wire

• The length of the wire

According to Faraday's Law, what is the relationship between the induced electromotive force (EMF) and the rate of change of magnetic flux?

• They are directly proportional

• They are inversely proportional

• They are unrelated

• They are equal

If the area of a wire loop is doubled while the magnetic field remains constant, what happens to the magnetic flux through the loop?

• It is halved

• It remains the same

• It is doubled

• It becomes zero

If the magnetic field through a loop is changing, what can be said about the induced current?

• There will be no induced current

• An induced current will be generated

• The induced current will be constant

• The induced current will be zero

Which of the following is NOT a way to change the magnetic flux through a loop?

• Changing the area of the loop

• Changing the strength of the magnetic field

• Changing the orientation of the loop relative to the magnetic field

• Changing the color of the loop

What is the unit of magnetic flux?

• Tesla

• Weber

• Newton

• Joule

If the magnetic field is perpendicular to the plane of the loop, how is the magnetic flux calculated?

What happens to the induced current if the rate of change of magnetic flux is increased?

• The induced current decreases

• The induced current increases

• The induced current remains the same

• The induced current becomes zero