# ELECTRIC FIELDS AND EQUIPOTENTIAL SURFACES 1.what condition must exist to have a region of nearly uniform electric fields 2.where are regions of strongest and weakest electric fields located Nearly always, there are flat equipotential surfaces. There are exceptions to this.

14,796 results
1. ## physics

points A {at(2,3)m} and B {at(5,7)m} are in a region where the electric field is uniform and given by vector E=(4i+3j) N/C. What is the potential difference Va-Vb in volts? a. 23 b. 27 c. 30 d. 24 e. 11 i think the formula may be ds=dxi+dyi but even with

2. ## physics

The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant?

3. ## Physics

If the electrical potential in a region is constant, the electric field must be zero everywhere in that region. True False

4. ## Physics

A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North. 14.8 seconds after it is released, the electric field instantaneously changes to a constant, uniform electric field E2 pointing due South. 8.07

5. ## Electricity

50.0pJ of energy is stored in a 3.00cm × 3.00cm × 3.00cm region of uniform electric field. What is the strength of the field?

6. ## Physics

The drawing shows two surfaces that have the same area. A uniform magnetic field B fills the space occupied by these surfaces and is oriented parallel to the yz plane as shown. If = 17°, find the ratio xz/ xy of the magnetic fluxes that pass through the

7. ## PHYSICS

A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = 2.5 N/C, Ey = Ez = 0. If the velocity of the particle at t = 0 is given by vy = 50 m/s, vx = vz = 0, what is the speed of the

8. ## College physics

150 pJ of energy is stored in a 1.0 cm times 1.0 cm times 1.0 cm region of uniform electric field. What is the electric field strength?

9. ## physics

A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = -5.5 N/C, Ey = Ez = 0. If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s, vy = vz =

An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the

11. ## science

Which choice correctly describes the waves in the electromagnetic spectrum? The bands within the spectrum are made of fluctuating electric and magnetic fields and have the same frequency and wavelength. The bands within the spectrum are made of fluctuating

12. ## science, maths

Why are electric field lines perpendicular at a point on an equipotential surface of a conductor .

13. ## Chemistry

Two fixed charges, -4μC and -5μC, are separated by a certain distance. If the charges are separated by 20cm, what is the magnitude of the electric field halfway between the charges? My textbook says that the formula for electric field is (kq)/r^2. But

14. ## physics question

Due to electric effects on the earth and in the atmosphere, there is an electric field near the earth's surface that points down. Assuming the electric field is uniform with a magnitude of 150 N/C, what charge would a 145g baseball need to float as though

15. ## physics help!

An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the

16. ## physics

In a certain region of space the electric potential is V= 5x-3x^2y+2yz^2. Find the expressions for the x,y,z compenents of the electric field in this region. What is the magnitude of the field at the point P, which has coordinates 1,0,-2)m? I don't know

17. ## Gauss' Law!!!!!!!!!!

Can any one help me for this problem? The cube in Figure 23-27 has edge length 1.40 m and is oriented as shown in a region of uniform electric field. Find the electric flux through the right face for the following electric fields, given in newtons per

18. ## Physics

Which choice correctly describes the waves in the electromagnetic spectrum? The bands within the spectrum are made of fluctuating electric and magnetic fields and have a wide range of frequencies and wavelengths. The bands within the spectrum are made of

19. ## electric

When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines

20. ## Physics-Charges

A wall has a negative charge distribution producing a uniform horizontal electric field. A small plastic ball of mass 0.0261 kg, carrying charge of −102 μC, is suspended by an uncharged, nonconducting thread 0.369 m long. The thread is attached to the

21. ## help help physics

An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the

22. ## world history

Which of the following statements BEST describe the region of Eatern Europe? A. a culturally uniform refion B. an insolated region C. a region of many peoples,languages,and traditions D. a peaceful region My answer is C?

23. ## Physics - please check over

A charged particle moves at a constant velocity in a straight line through a region in space... a) is the electric field zero in the region? Explain b) is the magnetic field zero i the region? Explain I think a is yes because a charged particle will always

24. ## Physics

A very large, thin, flat plate of aluminum of area A has a total charge Q uniformly distributed over its surfaces. Assuming the same charge is spread uniformly over the upper surface of an otherwise identical glass plate, compare the electric fields just

25. ## Physics

An electron enters a region of space where the potential difference between two equipotential surfaces are 12 cm apart. One surface has a potential of 120 volts and the other potential of 75 volts. What is the magnitude and direction of the electric field

26. ## physics

the region 0 < r < r1 is a charged insulating sphere with uniform charge density _E, the region r1 < r < r2 contains free space, and the region r2 < r < r3 is an insulating spherical shell with uniform charge density ��_E. What is the

27. ## physics

A parallel plate capacitor having plates 6.0 cm apart is connected across the terminals of a 12.0 V battery. (a) Being as quantitative as you can, describe the location and shape of the equipotential surface that is at a potential of +6.0 V relative to the

28. ## physics

The electric field E_1 at one face of a parallelepiped is uniform over the entire face and is directed out of the face. At the opposite face, the electric field E_2 is also uniform over the entire face and is directed into that face (the figure ). The two

29. ## science

Four closed surfaces, S1 through S4, together with the charges -2Q , Q , and -Q are sketched in the figure. (The colored lines are the intersections of the surfaces with the page.) Find the electric flux through each surface.

30. ## college

Electric fields are vector quantities whose magnitudes are measured in units of volts/meter (V/m). Find the resultant electric field when there are two fields, E1 and E2, where E1 is directed vertically upward and has magnitude 96 V/m and E2 is directed

31. ## physics

A beam of electrons enters a pair of croseed electric and magnetic fields in which the electric field strenght of 3.0*104 V m^-1 and magnetic flux density of 1*10^-2 T. If the beam is not deflected from its path by the fields, what must be the speed of the

32. ## science

Consider a point charge with q = 1.510-8 C. (a) What is the radius of an equipotential surface having a potential of 30 V? (b) Are surfaces whose potential differ by a constant amount (1.0 V) evenly spaced in radius

33. ## physics

Over a certain region of space, the electric potential is V = 5x - 6x2y + 2yz2. Find the expression for the x component of the electric field over this region. (Use x, y, and z as necessary.) Find the expression for the y component of the electric field

34. ## Physics

A positive point charge (q = +5.4 10-8 C) is surrounded by an equipotential surface A, which has a radius of rA = 1.5 m. A positive test charge (q0 = +4.8 10-11 C) moves from surface A to another equipotential surface B, which has a radius rB. The work

35. ## Physics Electric

The electric potential in a region is given by V(x,y,z) = -10.0x^2 + 20.0xyz + 6.0y^3 a) Find the electric field that produces this potential? b) Find the amount of charge contained within a cubic region in space 20 cm on a side and centered at the point

36. ## Physics

50.0pJ of energy is stored in a 3.00cm × 3.00cm × 3.00cm region of uniform electric field.

37. ## physics

A proton is projected in the positive x direction into a region of uniform electric field E = (-6.80 * 10^5 N/C at t = 0. The proton travels 6.80 cm as it comes to rest. (a) Determine the acceleration of the proton. thanks

38. ## physics

A charge of 8 pC is uniformly distributed throughout the volume between concentric spherical surfaces having radii of 1.7 cm and3.7 cm. What is the magnitude of the electric field 2.6 cm from the center of the surfaces? Let k_e=8.98755*10^9 N*m^2/C^2 I

39. ## Physics

Two point charges are placed on the x axis. The charge +4q is at x=3.00 m, and the -q charge is at x=-3.00. a) There is a point on the x axis between the two charges where the electric potential is zero. Where is this point? Found it to be: -1.80m b) The

40. ## physics

A spring with an unstrained length of 0.074 m and a spring constant of 2.4 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.1 X 10^3 kg

41. ## Physics

A spring with an unstrained length of 0.066 m and a spring constant of 2.3 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 4.84 10-3 kg and

42. ## Physics

If the electric field is zero everywhere inside a region of space, the potential must also be zero in that region. TRUE or FALSE, WHY?

43. ## Physics

ELECTRIC FIELDS AND EQUIPOTENTIAL SURFACES 1.what condition must exist to have a region of nearly uniform electric fields 2.where are regions of strongest and weakest electric fields located Nearly always, there are flat equipotential surfaces. There are

44. ## Physics

You measure a uniform electric field of 13.3 x 10^3 N/C between two equipotential surfaces. One surface is at a potential of 1543 V and the other is at 951 V. What is the separation between the two surfaces? How would I solve this?...What equations would I

45. ## physics

A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel and are in the

46. ## physics-Electric & magnetic fields

A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel and are in the

47. ## physics

A proton traveling at 10^4 m/s in the positive x-direction, enters a region where there is uniform electric field of magnitude 10 v/m and a uniform magnetic field of magnitude 10^-2 T. The electric and magnetic fields are parallel and are in the

48. ## physics

Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration of E and B will serve

49. ## Physics

Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration of E and B will serve

50. ## Physics

Gold ions (Au+) are accelerate to high speeds using electric fields. These ions are then passed through a region where uniform electric E and magnetic B fields are present. If the ions are traveling to the right, which configuration of E and B will serve

51. ## college-physics

In a particular region of space, the magnetic and electric fields have energy densities of 0.2 J/m3 and 4 J/m3 , respectively. Calculate the strength of the magnetic and electric fields in this region.

52. ## physics

Inside a perfect conductor 1)the electric potential is zero throughout, even at the surfaces. 2)the electric field is zero throughout, even at the surfaces. 3)the electric potential is constant throughout, even at the surfaces. 4)none of the above is

53. ## MS office Acess 2007

Determining Table Fields Which should not be included as fields in a table? Choose all that apply. A - Small fields B - Region fields C - Yes/No fields D - Calculated data E - Numbered fields F - Separate name fields

54. ## SCIENCE

how do i reword this sentence to a 9th grade leverl. students know that charged particles are sources of electric fields and are subject to the forces of the electric fields from other charges.

55. ## Physics

In designing a velocity selector that uses uniform perpendicular electric and magnetic fields, you want to select positive ions of charge +5e that are traveling perpendicular to the fields at 8.75 km/s. The magnetic field availabe to you has a magnitude of

56. ## electrc field inside charged solid

how can electric field exist inside a uniform charge solid... when by gauss law electric field is zero inside a conductor

57. ## Physics

Two equipotential surfaces surround a +1.63 10-8-C point charge. How far is the 204-V surface from the 81.5-V surface? Answer in m.

58. ## physics

Two equipotential surfaces surround a +1.61 10-8-C point charge. How far is the 191-V surface from the 68.0-V surface?

59. ## Physics C

A charged particle is released from rest in a region that has a uniform electric field of magnitude 64.0 N/C. After traveling a distance of 0.500 m in this region, the particle has a kinetic energy of 0.880 J. The charge on the particle is _______ C

60. ## physics

When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines

61. ## Space Exploration

tell what the concept of a habitable zone around a star is. how would I answer this question? The habitable zone is the region around a star where liquid water can exist on planetary surfaces.

62. ## College Physics II

Consider a region in space where a uniform electric field E = 7450 N/C points in the negative x direction. What is the distance between the +13.1 V and the +14.1 V equipotentials?

63. ## physics

An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the

64. ## algebra based physics

An electron in an oscilloscope tube is traveling horizontally with a speed of 4.4×106m/s . It passes through a 2.1cm long region with an electric field pointing upward with a magnitude of 1500N/C. what is the magnitude of the electron’s velocity when it

65. ## physics

A positive point charge (q = +5.62 x 10-8 C) is surrounded by an equipotential surface A, which has a radius of rA = 2.50 m. A positive test charge (q0 = +4.91 x 10-11 C) moves from surface A to another equipotential surface B, which has a radius rB. The

66. ## Physics

A magnetic field is uniform in a region of radius 10cm, and increasing at 0.02 Tesla/second. What is the magnitude of electric field in the region outside the magnetic field at radius of 15 cm?

67. ## Physics

Explain how the electric potential energy of a particle can increase when moving from a region of high electric potential to a region of low electric potential energy.

68. ## Physics - Calculating work required

Two equipotential surfaces are shown. If Va = -5V and Vb = -15V, find the work needed to move a -2μC charge from A to B along the indicated path. - First of all, does the path of the charge going from A to B matter or can I just calculate using the

69. ## physics

1- A 40.0cm diameter loop is turned to the position where the largest flux is handled in a uniform electric field. In this position, the flux is obtained as 5.20 × 10 ^ 5 N.m ^ 2/c Find the twist of the electric field. 2- An electron was released from

70. ## Physics

1- A 40.0cm diameter loop is turned to the position where the largest flux is handled in a uniform electric field. In this position, the flux is obtained as 5.20 × 10 ^ 5 N.m ^ 2/c Find the twist of the electric field. 2- An electron was released from

71. ## phsics

Two materials, for example silver and copper, of same cross section can be welded into a composite wire. When a voltage is applied across this wire, a stable current i whose value is determined by Ohm¡¦s Law is formed. Since the wire has uniform cross

72. ## physics

A proton is projected in the positive x direction into a region of uniform electric field E = (-6.80 * 10^5 N/C at t = 0. The proton travels 6.80 cm as it comes to rest. (a) Determine the acceleration of the proton. thanks

73. ## physics

The potential difference between the accelerating plates of a TV set is about 30 kV. If the distance between the plates is 1.1 cm, find the magnitude of the uniform electric field in the region between the plates. (in N/C)

74. ## Physics

A particle (mass = 4.0 g, charge = 50 mC) moves in a region of space where the electric field is uniform and is given by Ex=3.0N/C. If the velocity of the particle at t=0 is given by vy=40 m/s, what is the speed of the particle at t=2.0 seconds?

75. ## Physics

Suppose a 7kg bob is hanging from the ceiling in a region with uniform electric field E= 46x + 29y N/C. Find the charge on the bob if it's angular position is displaced from the vertical by 20 degrees.

76. ## Physics

The figure shows a cube whose sides are all 5cm long. Over the entire left-hand side of the cube is a uniform electric field E1=7500 N/C which is entering the cube at 20 degrees below the x axis. Over the right-handed side is a uniform electric field

77. ## physics 30

An electron that has a distance of 10.0 cm , is accelerated from rest through a potential difference of 4.50 kV before it enters a region between perpendicular elecric and magnetic fields. The electron moves into a region between positively charged plate

78. ## Math

Dear kind-hearted tutor, Can you check my solution on this question? Given f' (x) = {2x - 1, x≤1; x^2, x>1, find f’ (1) if exist. Since it asks to find f’ (1). I choose the first derivative because it satisfies the condition for 1. 2 x – 1 = 2 (1)

79. ## calculus

Is it possible to find an example of a bounded region in the x, y plane that satisfies the following condition : when you revolve the region about the x axis you obtain a solid that has a volume equals its surface area

80. ## calculus

Is it possible to find an example of a bounded region in the x, y plane that satisfies the following condition : when you revolve the region about the x axis you obtain a solid that has a volume equals its surface area

81. ## Physics

A spring with an unstrained length of 0.075 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 4.84 10-3 kg and

82. ## Physics

As you travel through space, you find yourself moving into regions of ever-higher voltage. You are traveling . . . A) perpendicularly to the electric field. B) in exactly the same direction as the electric field. C) in a region with no electric field. D)

83. ## Physics

As you travel through space, you find yourself moving into regions of ever-higher voltage. You are traveling . . . A) perpendicularly to the electric field. B) in exactly the same direction as the electric field. C) in a region with no electric field. D)

84. ## Physics

A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and

85. ## Physics #43

A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and

86. ## electromagnetism

#6 (6 points possible) The demonstration in LS6.U5 uses a Helmholtz coil, which is a pair of wire coils along a common axis that creates a somewhat uniform magnetic field at the center. To achieve a uniform field, the coil separation is equal to the coil

87. ## Physics

An airplane is ﬂying through a thundercloud at a height of 2100 m. (A very dangerous thing to do because of updrafts, turbulence,and the possibility of electric discharge.) If there is a charge concentration of 20.7 C at height 3280 m within the cloud

88. ## Physics

ANY ANSWERS WILL HELP! THANKS! 1. Isolated points of electric charge are called ____. 4b. ____ was the American physicist who first measured this fundamental unit of charge. 5. This type of electrification occurs when the charging rod touches an

89. ## Physics

A uniform electric field exists in the region between two oppositely charged plane parallel plates. an electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 3.20 cm distant from the

Multiple choice (show your work if any): 1) Two point charges q1=-10^-5 C and q2=-9×10^-5 C are placed respectively at two points A and B 40 cm apart. The electric field is null at a point C of [AB] such that : a) AC=50cm b) AC=10cm c) AC=20cm d) point C

Multiple choice (show your work if any): 1) Two point charges q1=-10^-5 C and q2=-9×10^-5 C are placed respectively at two points A and B 40 cm apart. The electric field is null at a point C of [AB] such that : a) AC=50cm b) AC=10cm c) AC=20cm d) point C

Multiple choice (show your work if any): 1) Two point charges q1=-10^-5 C and q2=-9×10^-5 C are placed respectively at two points A and B 40 cm apart. The electric field is null at a point C of [AB] such that : a) AC=50cm b) AC=10cm c) AC=20cm d) point C

93. ## Physics

A square plate of copper with 53.0 cm sides has no net charge and is placed in a region of uniform electric field of 77.0 kN/C directed perpendicularly to the plate. Find the charge density of each face of the plate.

94. ## Physics

A rectangular loop with dimensions 4.90 cm by 17.0 cm is placed in a uniform electric field and rotated to find the orientation that produces a maximum electric flux through the loop of 7.73 ✕ 104 N · m2/C. What is the magnitude of this electric field?

95. ## physics

The electric potential in a certain region is V = a x2 + b x + c, where a = 14 V/m2, b = −19 V/m, and c = 61 V. Determine the position where the electric field is zero. Answer in units of m Please help!

96. ## Physics

If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?

97. ## Physics

If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?

98. ## Science

If smoother surfaces produce less friction than rough surfaces when rubbed together, what would happen if the rough surfaces weared down and became smooth?

99. ## physics

In a region containing a uniform electric field at right angle to the magnetic field suppose, for instance, that Vector B point in X direction and Vector E in the Z axis as shown below. What path will a particle that is released from the origin it follow.

100. ## Physics

Consider the uniform electric field E = (8.0ĵ + 4.0 k) ✕ 103 N/C. What is its electric flux (in N · m2/C) through a circular area of radius 8.0 m that lies in the xy-plane? (Enter the magnitude in N · m2/C.)