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WorksheetsAP Physics: Ferromagnetism & Electromagnetic Fields
Total questions: 25
Worksheet time: 50mins
A clumsy student drops a bar magnet and it breaks into this configuration. Afterwards, what is the result for the left and right magnets respectively?
N-N on the left and S-S on the right
N-S on the left and N-S on the right
S-N on the left and S-N on the right
S-S on the left and N-N on the right
A clumsy student drops a bar magnet and it breaks into this configuration. Afterwards, what is the magnetic force between the two pieces?
neutral because both magnets are neutral
repelling because like poles repel
attracting because like poles attract
attracting because opposite poles attract
Two magnets are broken in half as shown. Which statement is true?
Both pairs of magnets attract each other.
The top pair of magnets attract each other while the bottom pair repels.
The bottom pair of magnets attract each other while the top pair repels.
Both pairs of magnets repel each other.
A compass is placed on top of a magnet as shown in side view. From the top view, what direction would the compass needle be pointing?
left (-x)
right (x)
up (y)
down (-y)
Two large magnets are placed near together. In between them, the compass needle points
left (-x)
right (x)
up (y)
down (-y)
Which shows the correct magnetic field?
a
b
c
d
e
Students make field lines between three bar mangets. Which two poles must the same polarity as E in order to form these field lines?
A
B
C
D
Current is carried by a long straight wire designated by the black x. What direction is the conventional current traveling?
out of the page
into the page
clockwise
counterclockwise
Current is carried by a long straight wire designated by the black x. What direction is magnetic field directed?
out of the page
into the page
clockwise
counterclockwise
A magnetic field is shown directed counterclockwise around a long, straight current-carrying wire. The wire carries current in the ________ direction.
up (y)
down (-y)
into the page (-z)
out of the page (z)
A wire carries current into the page. At point A, the magnetic field points
left (-x)
right (x)
up (y)
down (-y)
A wire carries current into the page. At point B, the magnetic field points
left (-x)
right (x)
up (y)
down (-y)
Point P has a magnetic field B. If P were moved twice as a far away while the current is halved, the resulting magnetic field would be
1/4 the strength in the same direction
1/2 the strength in the same direction
twice the strength in the same direction
four times the strength in the same direction
A long straight current-carrying wire carries current to the right. At point A, the magnetic field is directed
up (y)
down (-y)
into the page (-z)
out of the page (z)
A long straight current-carrying wire carries current to the right. Which statement is true about the field at point B?
It has the same magnitude as point A and is directed into the page (-z)
It has the same magnitude as point A and directed out of the page (z)
It has a lesser magnitude than A and is directed into the page (-z)
It has a lesser magnitude than A and is directed out of the page (z)
A long straight current-carrying wire carries current to the right. Which statement is true about the field at point C?
It has the same magnitude as point A and is directed into the page (-z)
It has the same magnitude as point A and directed out of the page (z)
It has a lesser magnitude than A and is directed into the page (-z)
It has a lesser magnitude than A and is directed out of the page (z)
A wire has conventional current directed into the page. Which is true about the direction and magnitude of the magnetic field of the points?
All points have a magnetic field that points down (-y) but all have different magnitudes.
All points have magnetic fields that point down (-y) and have the same magnitude as each other.
Some points have magnetic fields that point down (-y) and all have different magnitudes.
Some points have magnetic fields that point down (-y) and all have the same magnitude as each other.
A wire has conventional current directed into the page. Compared to point C, point A has
1/9th the field.
1/3 the field
three times the field
nine times the field
Two equal currents travel into and out of the page respectively. Along which line would the magnetic fields from each current cancel out?
line x'x
line y'y
line yA
the magnetic field does not cancel along any of these lines
Two wires carrying equal current into and out of the page respectively. Which points have net magnetic field pointing in the upwards (y) direction?
A
B
C
D
Two equal currents travel into the page. At point P, the magnetic field
points up (y)
points down (-y)
points into the page (-z)
cancels completely
At point P, the net magnetic field points
upwards (y)
downwards (-y)
into the page (-z)
out of the page (z)
A solenoid is viewed from the side such that its field is seen going into the page. The current in the solenoid must be traveling ________.
clockwise
counterclockwise
into the page
out of the page
Which two are true about the electromagnet?
The magnetic field points down (-y) inside the nail.
The magnetic field points up (+y) inside the nail.
The paperclips are attached to the north pole.
The paperclips are attached to the south pole.
Which of the following is true about the magnetic field formed inside the solenoid?
It points from left to right.
It points from right to left.
The left side of the solenoid is the north pole.
The right side of the solenoid is the north pole.
