The figure shows a parallel plate capacitor. The surface charge density on each plate is 8.8 × 10S1U1P1-S1S1P0S1U1P18S1S1P0 C/mS1U1P12S1S1P0. The point P is located 1.0 × 10S1U1P1-S1S1P0S1U1P15S1S1P0 m away from the positive plate. -If a +2.0 × 10-5 C point charge is placed at P, what is the force exerted on it?

A) 0.2 N, toward the negative plate B) 0.2 N, toward the positive plate C) 5 × 104 N, toward the positive plate D) 5 × 104 N, toward the negative plate E) 5 × 104 N, into the plane of the page A) 0.2 N, toward the negative plate B) 0.2 N, toward the positive plate C) 5 × 104 N, toward the positive plate D) 5 × 104 N, toward the negative plate E) 5 × 104 N, into the plane of the page

A cubical Gaussian surface is placed in a uniform electric field as shown in the figure. The length of each edge of the cube is 1.0 m. The uniform electric field has a magnitude of 5.0 × 108 N/C and passes through the left and right sides of the cube perpendicular to the surface. What is the total electric flux that passes through the cubical Gaussian surface?

A) 5.0 × 108 N.m2/C B) 3.0 × 109 N.m2/C C) 2.5 × 106 N.m2/C D) 1.5 × 107 N.m2/C E) zero N.m2/C A) 5.0 × 108 N.m2/C B) 3.0 × 109 N.m2/C C) 2.5 × 106 N.m2/C D) 1.5 × 107 N.m2/C E) zero N.m2/C

Exam 18: Electric Forces and Electric Fields

The figure shows a parallel plate capacitor. The surface charge density on each plate is 8.8 × 10^-⁸ C/m². The point P is located 1.0 × 10^-⁵ m away from the positive plate. -If a +2.0 × 10^-⁵ C point charge is placed at P, what is the force exerted on it?

(Multiple Choice)

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Question 21

The magnitude of the electric field at a distance of two meters from a negative point charge is E. What is the magnitude of the electric field at the same location if the magnitude of the charge is doubled?

(Multiple Choice)

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Question 22

Five particles are shot from the left into a region that contains a uniform electric field. The numbered lines show the paths taken by the five particles. A negatively charged particle with a charge -3Q follows path 2 while it moves through this field. Do not consider any effects due to gravity. -Which path would be followed by a helium atom (an electrically neutral particle)?

(Multiple Choice)

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Question 23

Which one of the following statements is true concerning the strength of the electric field between two oppositely charged parallel plates?

(Multiple Choice)

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Question 24

Which one of the following statements best explains why tiny bits of paper are attracted to a charged rubber rod?

(Multiple Choice)

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Question 25

Five particles are shot from the left into a region that contains a uniform electric field. The numbered lines show the paths taken by the five particles. A negatively charged particle with a charge -3Q follows path 2 while it moves through this field. Do not consider any effects due to gravity. -Which path would be followed by a charge +6Q?

(Multiple Choice)

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Question 26

A solid, conducting sphere of radius a carries an excess charge of +6 µC. This sphere is located at the center of a hollow, conducting sphere with an inner radius of b and an outer radius of c as shown. The hollow sphere also carries a total excess charge of +6 µC. -Determine the excess charge on the outer surface of the outer sphere (a distance c from the center of the system).

(Multiple Choice)

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Question 27

A charge Q exerts a 1.2 N force on another charge q. If the distance between the charges is doubled, what is the magnitude of the force exerted on Q by q?

(Multiple Choice)

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Question 28

A total charge of -6.50 µC is uniformly distributed within a sphere that has a radius of 0.150 m. What is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere?

(Multiple Choice)

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Question 29

Five particles are shot from the left into a region that contains a uniform electric field. The numbered lines show the paths taken by the five particles. A negatively charged particle with a charge -3Q follows path 2 while it moves through this field. Do not consider any effects due to gravity. -In which direction does the electric field point?

(Multiple Choice)

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Question 30

A uniform electric field with a magnitude of 125 000 N/C passes through a rectangle with sides of 2.50 m and 5.00 m. The angle between the electric field vector and the vector normal to the rectangular plane is 65.0°. What is the electric flux through the rectangle?

(Multiple Choice)

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Question 31

A rigid electric dipole is free to move in the electric field represented in the figure. Which one of the following phrases most accurately describes the initial motion of the dipole if it is released from rest in the position shown?

(Multiple Choice)

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Question 32

A cubical Gaussian surface is placed in a uniform electric field as shown in the figure. The length of each edge of the cube is 1.0 m. The uniform electric field has a magnitude of 5.0 × 10⁸ N/C and passes through the left and right sides of the cube perpendicular to the surface. What is the total electric flux that passes through the cubical Gaussian surface?

(Multiple Choice)

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Question 33

Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -2.0 µC; sphere B carries a charge of -6.0 µC; and sphere C carries a charge of +4.0 µC. Spheres A and B are touched together and then separated. Spheres B and C are then touched and separated. Does sphere C end up with an excess or a deficiency of electrons and how many electrons is it?

(Multiple Choice)

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Question 34

Two uncharged, conducting spheres, A and B, are held at rest on insulating stands and are in contact. A positively charged rod is brought near sphere A as suggested in the figure. While the rod is in place, someone moves sphere B away from A. How will the spheres be charged, if at all?

(Multiple Choice)

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Question 35

What is the magnitude and direction of the electric force on a -3.0 µC charge at a point where the electric field is 2800 N/C and is directed along the +y axis.

(Multiple Choice)

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Question 36

Three charges are positioned as indicated in the figure. What are the horizontal and vertical components of the net force exerted on the +15 µC charge by the +11 µC and +13 µC charges?

(Multiple Choice)

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Question 37

The figure shows the electric field lines in the vicinity of two point charges. Which one of the following statements concerning this situation is true?

(Multiple Choice)

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Question 38

Two point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation. -Which combination of charges would yield the greatest repulsive force between the charges?

(Multiple Choice)

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Question 39

Which one of the following statements is true concerning the magnitude of the electric field at a point in space?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 61

Exam 18: Electric Forces and Electric Fields

The figure shows a parallel plate capacitor. The surface charge density on each plate is 8.8 × 10-8 C/m2. The point P is located 1.0 × 10-5 m away from the positive plate. -If a +2.0 × 10-5 C point charge is placed at P, what is the force exerted on it?

The magnitude of the electric field at a distance of two meters from a negative point charge is E. What is the magnitude of the electric field at the same location if the magnitude of the charge is doubled?

Which one of the following statements is true concerning the strength of the electric field between two oppositely charged parallel plates?

Which one of the following statements best explains why tiny bits of paper are attracted to a charged rubber rod?

A charge Q exerts a 1.2 N force on another charge q. If the distance between the charges is doubled, what is the magnitude of the force exerted on Q by q?

A total charge of -6.50 µC is uniformly distributed within a sphere that has a radius of 0.150 m. What is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere?

A uniform electric field with a magnitude of 125 000 N/C passes through a rectangle with sides of 2.50 m and 5.00 m. The angle between the electric field vector and the vector normal to the rectangular plane is 65.0°. What is the electric flux through the rectangle?

A rigid electric dipole is free to move in the electric field represented in the figure. Which one of the following phrases most accurately describes the initial motion of the dipole if it is released from rest in the position shown?

Two uncharged, conducting spheres, A and B, are held at rest on insulating stands and are in contact. A positively charged rod is brought near sphere A as suggested in the figure. While the rod is in place, someone moves sphere B away from A. How will the spheres be charged, if at all?

What is the magnitude and direction of the electric force on a -3.0 µC charge at a point where the electric field is 2800 N/C and is directed along the +y axis.

Three charges are positioned as indicated in the figure. What are the horizontal and vertical components of the net force exerted on the +15 µC charge by the +11 µC and +13 µC charges?

The figure shows the electric field lines in the vicinity of two point charges. Which one of the following statements concerning this situation is true?

Two point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation. -Which combination of charges would yield the greatest repulsive force between the charges?

Which one of the following statements is true concerning the magnitude of the electric field at a point in space?

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The figure shows a parallel plate capacitor. The surface charge density on each plate is 8.8 × 10^-⁸ C/m². The point P is located 1.0 × 10^-⁵ m away from the positive plate. -If a +2.0 × 10^-⁵ C point charge is placed at P, what is the force exerted on it?