Chapter Questions
Which is the unit of magnetic flux in the SI system?(A) weber(B) joule(C) coulomb(D) newton per ampere-meter
The presence of a uniform magnetic field may be detected by using a(A) stationary charge(B) small mass(C) beam of neutrons(D) magnetic compass
In the diagram below, what is the direction of the magnetic field at point $P ?$Poles of Permanent Magnet(A) toward $A$(B) toward $B$(C) toward $C$(D) toward $D$
Which diagram best illustrates the direction of the magnetic field between the unlike poles of two bar magnets?
Which diagram best represents the magnetic field near the poles of a horseshoe magnet?
Which vector best represents the direction of the magnetic field at point $A$ near the two north magnetic poles shown in the diagram?(A)(B) (C)(D)
Which arrow in the diagram below represents the direction of the flux inside the bar magnet?(A) $A$(B) $B$(C) $C$(D) $D$
As the distance between two opposite magnetic poles increases, the flux density midway between them(A) decreases(B) increases(C) remains the same
Which diagram best represents the magnetic field around an iron bar placed between unlike magnetic poles?
Which diagram best represents the shape of the magnetic field around the solenoid?
Which shows the direction of the compass needle at point $C$ ?
If is the north pole of the solenoid, which diagram best represents the direction of electron flow in one of the wire loops?
If an iron rod were inserted into the solenoid, the strength of the magnetic field inside the solenoid would(A) decrease(B) increase(C) remain the same
Each diagram below represents a cross section of a long, straight, current-carrying wire with the electron flow into the page. Which diagram best represents the magnetic field near the wire?
A magnetic field will be produced by(A) moving electrons(B) moving neutrons(C) stationary protons(D) stationary ions
What is the direction of the magnetic field near the center of the current-carrying wire loop shown in the diagram below?(A) into the page(B) out of the page(C) to the left(D) to the right
The diagram represents a wire with electrons moving in the direction shown. At point $A$, the magnetic field is directed(A) out of the page(B) into the page(C) from left to right(D) from right to left
Which diagram best represents the direction of the magnetic field around a wire conductor in which the electrons are moving as indicated? [The X's indicate that the field is directed into the paper, and the dots indicate that the field is directed out of the page.]
As the permeability of a substance in a magnetic field decreases, the flux density within the substance(A) decreases(B) increases(C) remains the same
In the diagram below, electron current is passed through a solenoid. The north pole of the solenoid is nearest to point(A) $A$(B) $B$(C) $C$(D) $D$
If the current through a solenoid increases, the magnetic field strength of the solenoid(A) decreases(B) increases(C) remains the same
As materials of increasing permeability are placed at position $X$ in the diagram, the flux density at position $X$(A) decreases(B) increases(C) remains the same
The diagram below shows an end view of a current-carrying wire between the poles of a magnet. The wire is perpendicular to the magnetic field.If the direction of the electron flow is out of the page, which arrow correctly shows the direction of the magnetic force $\mathbf{F}$ acting on the wire?
Wires $x$ and $y$ experience a force when electrons pass through them as shown in the diagram below.The force on wire $y$ will be toward(A) $A$(B) $B$(C) $C$(D) $D$
When electrons flow from point $A$ to point $B$ in the wire shown in the diagram, a force will be produced on the wire(A) toward $\mathrm{N}$(B) toward S(C) into the page(D) out of the page
The diagram below shows conductor $C$ between two opposite magnetic poles. Which procedure will produce the greatest induced potential difference in the conductor?(A) holding the conductor stationary between the poles(B) moving the conductor out of the page(C) moving the conductor toward the right side of the page(D) moving the conductor toward the north pole
If wire $A B$ is moved to the left at a constant speed, the direction of the induced electron motion in wire $A B$ will be(A) toward $A$, only(B) toward $B$, only(C) first toward $A$ and then toward $B$(D) first toward $B$ and then toward $A$
As a result of the magnetic fields associated with the wires, wire $A$ will experience a force directed toward(A) 1(B) 2(C) 3(D) 4
With the magnetic field removed and the electric field turned on, the beam would be deflected(A) upward(B) downward(C) into the page(D) out of the page
Which statement best describes a proton that is being accelerated?(A) It produces electromagnetic radiation.(B) The magnitude of its charge increases.(C) It absorbs a neutron to become an electron.(D) It is attracted to other protons.