Question 1

Which of the following statements is correct?

Accepted Answer

A)   Earth's geographic north pole is the north pole of the Earth's magnetic field.
B)   Earth's geographic south pole is the south pole of the Earth's magnetic field.
C)   The north pole of a magnet points towards the Earth's geographic north pole.
D)   The north pole of a magnet points towards the Earth's geographic south pole.
E)   None of the above statements is correct..F) C) and D)
G) A) and B)

Question 2

A rectangular coil carrying a current in a magnetic field will experience a net torque that will cause the coil to rotate in that field, if the field is not along the coil axis.

Accepted Answer

A) True 
 B)False

Question 3

An electric field makes a charged particle accelerate but a magnetic field takes it around in a circle.

Accepted Answer

A) True 
 B)False

Question 4

A circular loop of wire of cross-sectional area 0.12 m2 consists of 200. turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

Accepted Answer

Question 5

A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of 0.18 N, what angle does the wire make with respect to the magnetic field?

Accepted Answer

A)   20°
B)   25°
C)   30°
D)   35°
E)   60°F) B) and E)
G) A) and E)

Question 6

FIGURE 22-9 
-A long straight wire carrying a 4-A current is placed along the x-axis as shown in Figure 22-9. What is the magnitude of the magnetic field at a point P, located at y = 0.02 m, due to the current in this wire?

Accepted Answer

A)   20 μT
B)   30 μT
C)   40 μT
D)   50 μT
E)   60 μTF) C) and D)
G) A) and B)

Question 7

FIGURE 22-2 
-A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 22-2. If there is no current flowing through the coil, what is the force acting on section AB of the coil?

Accepted Answer

A)   ILB sinθ
B)   ILB cos θ
C)   ILB
D)   0 N
E)   None of the other answers is correct.F) B) and E)
G) A) and E)

Question 8

A current carrying wire placed in a magnetic field perpendicular to the wire experiences a maximum force.

Accepted Answer

A) True 
 B)False

Question 9

An electron, moving south, enters a magnetic field of certain strength. Because of this field the electron curves upward. What is the direction of the magnetic field?

Accepted Answer

A)   downward
B)   towards the east
C)   upward
D)   towards the west
E)   towards the northF) B) and D)
G) All of the above

Question 10

A solenoid with a certain number of turns N and carrying a current of 2.000 A has a length of 34.00 cm. If the magnitude of the magnetic field generated at the center of the solenoid is 9.000 mT, what is the value of N?

Accepted Answer

A)   860.0
B)   1591
C)   2318
D)   3183
E)   1218F) A) and B)
G) C) and E)

Question 11

FIGURE 22-4 
-When the switch is closed in the circuit shown in the sketch in Figure 22-4, the wire between the poles of the horseshoe magnet deflects upward. From this you can conclude that the left end of the magnet is

Accepted Answer

A)   not contributing to the wire's deflection.
B)   a north magnetic pole.
C)   a south magnetic pole.
D)   a magnetic monopole.
E)   a magnetic dipole.F) C) and D)
G) C) and E)

Question 12

A proton, moving west, enters a magnetic field of a certain strength. Because of this magnetic field the proton curves upward. What is the direction of this magnetic field?

Accepted Answer

A)   towards the west
B)   towards the east
C)   towards the south
D)   towards the north
E)   downwardF) All of the above
G) A) and B)

Question 13

FIGURE 22-3 
-A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 22-3. If there is a current I flowing through this coil, what is the direction of the force acting on section CD of this coil?

Accepted Answer

A)   perpendicular to and into the page
B)   perpendicular to and out of the page
C)   in the direction of the magnetic field
D)   in the opposite direction of the magnetic field
E)   noneF) A) and B)
G) A) and C)

Question 14

FIGURE 22-7 
-A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E. It is placed in a uniform magnetic field of 0.85 T in the same plane, directed as shown in Figure 22-7. What is the magnitude and direction of the force acting on the wire?

Accepted Answer

A)   0.40 N perpendicular out of the page
B)   0.10 N perpendicular into the page
C)   0.40 N perpendicular into the page
D)   0.10 N perpendicular out of the page
E)   0.20 N perpendicular out of the pageF) B) and E)
G) A) and C)

Question 15

The magnetic field unlike the electric field is continuous.

Accepted Answer

A) True 
 B)False

Question 16

The magnetic field at a distance of 2 cm from a current carrying wire is 4 μT. What is the magnetic field at a distance of 4 cm from the wire?

Accepted Answer

A)   2 μT
B)   4 μT
C)   6 μT
D)   8 μT
E)   10 μTF) C) and D)
G) D) and E)

Question 17

A charged particle traveling opposite to a magnetic field does not experience a magnetic force.

Accepted Answer

A) True 
 B)False

Question 18

A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal force. In what direction should the proton move?

Accepted Answer

A)   upward
B)   northward
C)   southward
D)   eastward
E)   westwardF) A) and E)
G) A) and D)

Question 19

FIGURE 22-7 
-A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E. It is placed in a uniform magnetic field of 0.55 T in the same plane, directed as shown in Figure 22-7. What is the magnitude and direction of the force acting on section CD of this wire?

Accepted Answer

A)   0.070 N perpendicular into the page
B)   0.40 N perpendicular out of the page
C)   0.070 N perpendicular out of the page
D)   0.40 N perpendicular into the page
E)   0.20 N perpendicular out of the pageF) C) and E)
G) None of the above

Question 20

A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proton?

Accepted Answer

A)   zero
B)   1.6 × 10-20 N
C)   3.2 × 10-20 N
D)   1.6 × 10-21 N
E)   3.2 × 10-21 NF) None of the above
G) A) and B)

Exam 22: Magnetism

The magnetic field unlike the electric field is continuous.

Correct Answer
verified

A circular loop of wire of cross-sectional area 0.12 m² consists of 200. turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

Correct Answer
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FIGURE 22-2 -A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 22-2. If there is no current flowing through the coil, what is the force acting on section AB of the coil?

Correct Answer
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Which of the following statements is correct?

Correct Answer
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A proton, moving west, enters a magnetic field of a certain strength. Because of this magnetic field the proton curves upward. What is the direction of this magnetic field?

Correct Answer
verified

A rectangular coil carrying a current in a magnetic field will experience a net torque that will cause the coil to rotate in that field, if the field is not along the coil axis.

Correct Answer
verified

A solenoid with a certain number of turns N and carrying a current of 2.000 A has a length of 34.00 cm. If the magnitude of the magnetic field generated at the center of the solenoid is 9.000 mT, what is the value of N?

Correct Answer
verified

A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of 0.18 N, what angle does the wire make with respect to the magnetic field?

Correct Answer
verified

An electron, moving south, enters a magnetic field of certain strength. Because of this field the electron curves upward. What is the direction of the magnetic field?

Correct Answer
verified

FIGURE 22-3 -A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 22-3. If there is a current I flowing through this coil, what is the direction of the force acting on section CD of this coil?

Correct Answer
verified

A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proton?

Correct Answer
verified

An electric field makes a charged particle accelerate but a magnetic field takes it around in a circle.

Correct Answer
verified

FIGURE 22-4 -When the switch is closed in the circuit shown in the sketch in Figure 22-4, the wire between the poles of the horseshoe magnet deflects upward. From this you can conclude that the left end of the magnet is

Correct Answer
verified

The magnetic field at a distance of 2 cm from a current carrying wire is 4 μT. What is the magnetic field at a distance of 4 cm from the wire?

Correct Answer
verified

FIGURE 22-9 -A long straight wire carrying a 4-A current is placed along the x-axis as shown in Figure 22-9. What is the magnitude of the magnetic field at a point P, located at y = 0.02 m, due to the current in this wire?

Correct Answer
verified

Correct Answer
verified

A current carrying wire placed in a magnetic field perpendicular to the wire experiences a maximum force.

Correct Answer
verified

A charged particle traveling opposite to a magnetic field does not experience a magnetic force.

Correct Answer
verified

A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal force. In what direction should the proton move?

Correct Answer
verified

FIGURE 22-7 -A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E. It is placed in a uniform magnetic field of 0.85 T in the same plane, directed as shown in Figure 22-7. What is the magnitude and direction of the force acting on the wire?

Correct Answer
verified

Exam 22: Magnetism

The magnetic field unlike the electric field is continuous.

Correct AnswerverifiedShow Answer

A circular loop of wire of cross-sectional area 0.12 m2 consists of 200. turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

Correct AnswerverifiedShow Answer

FIGURE 22-2 -A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 22-2. If there is no current flowing through the coil, what is the force acting on section AB of the coil?

Correct AnswerverifiedShow Answer

Which of the following statements is correct?

Correct AnswerverifiedShow Answer

A proton, moving west, enters a magnetic field of a certain strength. Because of this magnetic field the proton curves upward. What is the direction of this magnetic field?

Correct AnswerverifiedShow Answer

A rectangular coil carrying a current in a magnetic field will experience a net torque that will cause the coil to rotate in that field, if the field is not along the coil axis.

Correct AnswerverifiedShow Answer

A solenoid with a certain number of turns N and carrying a current of 2.000 A has a length of 34.00 cm. If the magnitude of the magnetic field generated at the center of the solenoid is 9.000 mT, what is the value of N?

Correct AnswerverifiedShow Answer

A wire, 0.60 m in length, is carrying a current of 2.0 A and is placed at a certain angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of 0.18 N, what angle does the wire make with respect to the magnetic field?

Correct AnswerverifiedShow Answer

An electron, moving south, enters a magnetic field of certain strength. Because of this field the electron curves upward. What is the direction of the magnetic field?

Correct AnswerverifiedShow Answer

FIGURE 22-3 -A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in Figure 22-3. If there is a current I flowing through this coil, what is the direction of the force acting on section CD of this coil?

Correct AnswerverifiedShow Answer

A stationary proton is in a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the proton?

Correct AnswerverifiedShow Answer

An electric field makes a charged particle accelerate but a magnetic field takes it around in a circle.

Correct AnswerverifiedShow Answer

FIGURE 22-4 -When the switch is closed in the circuit shown in the sketch in Figure 22-4, the wire between the poles of the horseshoe magnet deflects upward. From this you can conclude that the left end of the magnet is

Correct AnswerverifiedShow Answer

The magnetic field at a distance of 2 cm from a current carrying wire is 4 μT. What is the magnetic field at a distance of 4 cm from the wire?

Correct AnswerverifiedShow Answer

FIGURE 22-9 -A long straight wire carrying a 4-A current is placed along the x-axis as shown in Figure 22-9. What is the magnitude of the magnetic field at a point P, located at y = 0.02 m, due to the current in this wire?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A current carrying wire placed in a magnetic field perpendicular to the wire experiences a maximum force.

Correct AnswerverifiedShow Answer

A charged particle traveling opposite to a magnetic field does not experience a magnetic force.

Correct AnswerverifiedShow Answer

A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal force. In what direction should the proton move?

Correct AnswerverifiedShow Answer

FIGURE 22-7 -A wire in the shape of an "M" lies in the plane of the paper. It carries a current of 2.0 A, flowing from A to E. It is placed in a uniform magnetic field of 0.85 T in the same plane, directed as shown in Figure 22-7. What is the magnitude and direction of the force acting on the wire?

Correct AnswerverifiedShow Answer

Correct Answer
verified

A circular loop of wire of cross-sectional area 0.12 m² consists of 200. turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

Correct Answer
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