Question 1

In the figure, a ring 0.71 m in radius carries a charge of + 580 nC uniformly distributed over it. A point charge Q is placed at the center of the ring. The electric field is equal to zero at field point P, which is on the axis of the ring, and 0.73 m from its center. (ε0 = 8.85 × 10-12 C2/N ∙ m2)  The point charge Q is closest to 0 = 8.85 × 10-12 C2/N ∙ m2)  The point charge Q is closest to   A)  -210 B)  -300 C)  -420 D)  210 E)  300" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   -210
B)   -300
C)   -420
D)   210
E)   300F) B) and E)
G) A) and B)

Question 2

Two thin 80.0-cm rods are oriented at right angles to each other. Each rod has one end at the origin of the coordinates, and one of them extends along the +x-axis while the other extends along the +y-axis. The rod along the +x-axis carries a charge of -15.0 µC distributed uniformly along its length, and the other rod carries +15.0 µC uniformly over its length. Find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm).
(e = 1.60 × 10-19 C, ε0 = 8.85 × 10-12 C2/N ∙ m2)

Accepted Answer

1.35 × 10^-1³ ...

Question 3

Two point charges Q1 and Q2 of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges? 1 and Q2 of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges?   A)  A B)  B C)  C D)  D E)  The field is equal to zero at point P." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   The field is equal to zero at point P.F) C) and D)
G) A) and E)

Question 4

A 5.0-μC point charge is placed at the 0.00 cm mark of a meter stick and a -4.0-μC point charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field due to these charges equal to zero?

Accepted Answer

4.7 m from...

Question 5

A 3.0-μC positive point charge is located at the origin and a 2.0 μC positive point charge is located at x = 0.00 m, y = 1.0 m. Find the coordinates of the point where the net electric field strength due to these charges is zero.

Accepted Answer

A)   x = 0.00 m, y = 0.55 m
B)   x = 0.00 m, y = 0.67 m
C)   x = 0.00 m, y = 1.5 m
D)   x = 0.00 m, y = 0.60 mE) A) and B)
F) A) and C)

Question 6

A thin, circular disk of radius 30.0 cm is oriented in the yz-plane with its center at the origin. The disk carries a total charge of +3.00 μC distributed uniformly over its surface. Calculate the magnitude of the electric field due to the disk at the point x = 15.0 cm along the x-axis. (ε0 = 8.85 × 10-12 C2/N ∙ m2)

Accepted Answer

A)   9.95 × 105 N/C
B)   4.98 × 105 N/C
C)   3.31 × 105 N/C
D)   2.49 × 105 N/C
E)   1.99 × 105 N/CF) B) and D)
G) C) and D)

Question 7

A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector?
(ε0 = 8.85 × 10-12 C2/N ∙ m2)

Accepted Answer

A)   7.9 N/C
B)   3.9 N/C
C)   0.49 N/C
D)   0.031 N/CE) B) and D)
F) A) and B)

Question 8

An electric field is set up between two parallel plates, each of area 2.0 m2, by putting 1.0 μC of charge on one plate and -1.0 μC of charge on the other. The plates are separated by 4.0 mm with their centers opposite each other, and the charges are distributed uniformly over the surface of the plates. What is the magnitude of the electric field between the plates at a distance of 1.0 mm from the positive plate, but not near the edges of the plates? (ε0 = 8.85 × 10-12 C2/N ∙ m2)

Accepted Answer

A)   4.2 × 104 N/C
B)   1.4 × 104 N/C
C)   3.1 × 104 N/C
D)   0.00 N/C
E)   5.6 × 104 N/CF) C) and D)
G) A) and C)

Question 9

An electric dipole consists of charges ±5.00 µC separated by 1.20 mm. It is placed in a vertical electric field of magnitude 525 N/C oriented as shown in the figure. The magnitude of the net torque this field exerts on the dipole is closest to -6 N ∙ m. B)  3.15 × 10-6 N ∙ m. C)  2.41 × 10-6 N ∙ m. D)  1.01 × 10-6 N ∙ m. E)  1.21 × 10-6 N ∙ m." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   2.02 × 10-6 N ∙ m.
B)   3.15 × 10-6 N ∙ m.
C)   2.41 × 10-6 N ∙ m.
D)   1.01 × 10-6 N ∙ m.
E)   1.21 × 10-6 N ∙ m.F) C) and D)
G) A) and B)

Question 10

Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   The field is equal to zero at point P.F) A) and D)
G) A) and C)

Question 11

The electric field strength in the space between two closely spaced parallel disks is 1.0 × 105 N/C. This field is the result of transferring 3.9 × 109 electrons from one disk to the other. What is the diameter of the disks? (e = 1.60 × 10-19 C, ε0 = 8.85 × 10-12 C2/N ∙ m2)

Accepted Answer

A)   3.0 cm
B)   1.5 cm
C)   4.5 cm
D)   6.0 cmE) B) and C)
F) C) and D)

Question 12

An electron is initially moving to the right when it enters a uniform electric field directed upwards. Which trajectory shown below will the electron follow?

Accepted Answer

A)   trajectory W
B)   trajectory X
C)   trajectory Y
D)   trajectory ZE) C) and D)
F) A) and D)

Exam 26: The Electric Field

Correct Answer
verified

Two point charges Q₁ and Q₂ of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges?

Correct Answer
verified

A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector? (ε₀ = 8.85 × 10^-12 C^2/N ∙ m²)

Correct Answer
verified

Correct Answer
verified

An electric dipole consists of charges ±5.00 µC separated by 1.20 mm. It is placed in a vertical electric field of magnitude 525 N/C oriented as shown in the figure. The magnitude of the net torque this field exerts on the dipole is closest to

Correct Answer
verified

An electron is initially moving to the right when it enters a uniform electric field directed upwards. Which trajectory shown below will the electron follow?

Correct Answer
verified

Correct Answer
verified
1.35 × 10^-1³ ...
View Answer

Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square?

Correct Answer
verified

A 5.0-μC point charge is placed at the 0.00 cm mark of a meter stick and a -4.0-μC point charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field due to these charges equal to zero?

Correct Answer
verified
4.7 m from...
View Answer

Correct Answer
verified

The electric field strength in the space between two closely spaced parallel disks is 1.0 × 10⁵ N/C. This field is the result of transferring 3.9 × 10⁹ electrons from one disk to the other. What is the diameter of the disks? (e= 1.60 × 10^-19C, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

Correct Answer
verified

A 3.0-μC positive point charge is located at the origin and a 2.0 μC positive point charge is located at x = 0.00 m, y = 1.0 m. Find the coordinates of the point where the net electric field strength due to these charges is zero.

Correct Answer
verified

Exam 26: The Electric Field

Correct AnswerverifiedShow Answer

Two point charges Q1 and Q2 of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges?

Correct AnswerverifiedShow Answer

A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector? (ε0 = 8.85 × 10-12 C2/N ∙ m2)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

An electric dipole consists of charges ±5.00 µC separated by 1.20 mm. It is placed in a vertical electric field of magnitude 525 N/C oriented as shown in the figure. The magnitude of the net torque this field exerts on the dipole is closest to

Correct AnswerverifiedShow Answer

An electron is initially moving to the right when it enters a uniform electric field directed upwards. Which trajectory shown below will the electron follow?

Correct AnswerverifiedShow Answer

Correct Answerverified1.35 × 10-13 ...View AnswerShow Answer

Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square?

Correct AnswerverifiedShow Answer

A 5.0-μC point charge is placed at the 0.00 cm mark of a meter stick and a -4.0-μC point charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field due to these charges equal to zero?

Correct Answerverified4.7 m from...View AnswerShow Answer

Correct AnswerverifiedShow Answer

The electric field strength in the space between two closely spaced parallel disks is 1.0 × 105 N/C. This field is the result of transferring 3.9 × 109 electrons from one disk to the other. What is the diameter of the disks? (e = 1.60 × 10-19 C, ε0 = 8.85 × 10-12 C2/N ∙ m2)

Correct AnswerverifiedShow Answer

A 3.0-μC positive point charge is located at the origin and a 2.0 μC positive point charge is located at x = 0.00 m, y = 1.0 m. Find the coordinates of the point where the net electric field strength due to these charges is zero.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Two point charges Q₁ and Q₂ of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges?

Correct Answer
verified

A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector? (ε₀ = 8.85 × 10^-12 C^2/N ∙ m²)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1.35 × 10^-1³ ...
View Answer

Correct Answer
verified

Correct Answer
verified
4.7 m from...
View Answer

Correct Answer
verified

The electric field strength in the space between two closely spaced parallel disks is 1.0 × 10⁵ N/C. This field is the result of transferring 3.9 × 10⁹ electrons from one disk to the other. What is the diameter of the disks? (e= 1.60 × 10^-19C, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

Correct Answer
verified

Correct Answer
verified