FLUX
What effect does a changing electric flux have on the production of electric current?
a) It has no effect on electric current
b) It decreases electric current
c) It causes the production of electric current
d) It increases electric current
c) It causes the production of electric current
What does Faraday’s Law state regarding the relationship between electromotive force and the change in magnetic flux?
a) Electromotive force is unrelated to the change in magnetic flux
b) Electromotive force is inversely proportional to the change in magnetic flux
c) Electromotive force is directly proportional to the change in magnetic flux
d) Electromotive force opposes the change in magnetic flux
c) Electromotive force is directly proportional to the change in magnetic flux
How is the electrical potential associated with the electrostatic field?
a) It is associated with a changing electric potential
b) It is associated with a constant electric potential
c) It is associated with a changing magnetic potential
d) It is associated with a constant magnetic potential
b) It is associated with a constant electric potential
According to Lenz’s law, what must be the direction of the induced current when the induced magnetic field opposes the flux change?
a) The induced current must be in the same direction as the induced magnetic field
b) The induced current must be in the opposite direction to the induced magnetic field
c) The induced current must be perpendicular to the induced magnetic field
d) The induced current must be parallel to the induced magnetic field
b) The induced current must be in the opposite direction to the induced magnetic field
What is the direction of the induced magnetic field when the flux is increasing downward?
a) Upward
b) Downward
c) No induced magnetic field
d) Indeterminate
a) Upward
What permits electric current to flow through a circuit?
a) Electric potential
b) Electromagnetic force
c) Electromotive force (emf) or voltage
d) Magnetic force
c) Electromotive force (emf) or voltage
How does the induction of electric fields relate to the effects of time, according to Faraday's law of electromagnetic induction?
a) It is independent of the effects of time
b) It is inversely proportional to the effects of time
c) It depends on the effects of time
d) It opposes the effects of time
c) It depends on the effects of time
How is the electrical potential associated with the non-electrostatic/induced electric field?
a) It is associated with a changing electric potential
b) It is associated with a constant electric potential
c) It is associated with a changing magnetic potential
d) It is associated with a constant magnetic potential
a) It is associated with a changing electric potential
What does Lenz’s law state regarding the relationship between the magnetic induction effect and its cause?
a) The magnetic induction effect enhances its cause
b) The magnetic induction effect opposes its cause
c) The magnetic induction effect is unrelated to its cause
d) The magnetic induction effect depends on its cause
b) The magnetic induction effect opposes its cause
What does inductance refer to in an electrical conductor?
a) Its capacity to store electric charge
b) Its capacity to conduct electric current
c) Its capacity to oppose a change in current
d) Its capacity to generate magnetic fields
c) Its capacity to oppose a change in current
In the general relation for the magnitude of the magnetic flux, what does the angle
θ refer to?
a) Angle between the magnetic field and the electric field
b) Angle between the magnetic field and the direction of motion
c) Angle between the magnetic field and the area vector
d) Angle between the magnetic field and the velocity vector
c) Angle between the magnetic field and the area vector
What is the relationship between electricity and magnetism?
a) They are completely independent fields
b) They are symmetrical fields
c) They are unrelated fields
d) They are two interrelated fields
d) They are two interrelated fields
What is the source of the electrostatic field?
a) Originates from changing magnetic fields or moving charges
b) Originates from stationary electric charges
c) Originates from stationary magnetic fields
d) Originates from changing electric fields
b) Originates from stationary electric charges
What is the direction of the induced current when there is no change in flux?
a) Clockwise
b) Counterclockwise
c) No induced current
d) Indeterminate
c) No induced current
In what form do inductors store electrical energy?
a) Electric energy
b) Kinetic energy
c) Thermal energy
d) Magnetic energy
d) Magnetic energy
How does the induced electromotive force (E) relate to the rate of change of the magnetic flux in the circuit?
a) It is directly proportional to the rate of change of the magnetic flux
b) It is inversely proportional to the rate of change of the magnetic flux
c) It is unrelated to the rate of change of the magnetic flux
d) It varies linearly with the rate of change of the magnetic flux
a) It is directly proportional to the rate of change of the magnetic flux
What type of field characterizes the electrostatic field?
a) Dynamic or time-varying electric field
b) Stationary electric field
c) Magnetic field
d) Gravitational field
b) Stationary electric field
What is the source of the non-electrostatic/induced electric field?
a) Originates from changing magnetic fields or moving charges
b) Originates from stationary electric charges
c) Originates from stationary magnetic fields
d) Originates from changing electric fields
a) Originates from changing magnetic fields or moving charges
What is the direction of the induced magnetic field when there is no change in flux?
a) Upward
b) Downward
c) No induced magnetic field
d) Indeterminate
c) No induced magnetic field
What is the SI unit for inductance?
a) Volt (V)
b) Tesla (T)
c) Henry (H)
d) Joule (J)
c) Henry (H)
What is the relationship between the induced electromotive force and the change in magnetic flux?
a) They always head in similar directions
b) They always head in opposite directions
c) Their directions depend on the specifics of the situation
d) Their directions are unrelated
b) They always head in opposite directions
What type of field characterizes the non-electrostatic/induced electric field?
a) Static or stationary electric field
b) Dynamic or time-varying electric field
c) Magnetic field
d) Gravitational field
b) Dynamic or time-varying electric field
What does Lenz’s law provide in terms of predicting the magnitude of the induced current?
a) It provides no way to predict the magnitude of the induced current
b) It provides an alternative way to predict the magnitude of the induced current
c) It predicts the exact magnitude of the induced current
d) It predicts the direction of the induced current, not the magnitude
b) It provides an alternative way to predict the magnitude of the induced current
What is the direction of the induced current when the flux is increasing downward?
a) Clockwise
b) Counterclockwise
c) No induced current
d) Indeterminate
a) Clockwise
Which statement accurately describes the flow of electrons in a circuit?
a) Electrons flow in one direction only, from the positive terminal to the negative terminal of the source.
b) Electrons flow in one direction only, from the negative terminal to the positive terminal of the source.
c) Electrons periodically change their direction of flow, alternating back and forth.
d) Electrons flow randomly in all directions within the circuit.
b) Electrons flow in one direction only, from the negative terminal to the positive terminal of the source.