Which of the following statements are correct: (1) Electric field has same unit as force. (2) Two opposite charges always repeal each other. (3) A solid metal sphere is placed in an uniform electric field E. The electric field inside the metal sphere will be E/2 when in static equilibrium. (4) In static equilibrium free charges will always reside on the surface of a conductor. (5) Electric field lines can not cross each other. 2, 4, and 5 are correct O 2, 3, and 4 are correct O 1, 2, 4, and 5 are correct O 1, 2, and 4 are correct all are correct F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 )) 24 & 4 6. 8 R т E F н

Which of the following statements are correct: (1) Electric field has same unit as force. (2) Two opposite charges always repeal each other. (3) A solid metal sphere is placed in an uniform electric field E. The electric field inside the metal sphere will be E/2 when in static equilibrium. (4) In static equilibrium free charges will always reside on the surface of a conductor. (5) Electric field lines can not cross each other. 2, 4, and 5 are correct O 2, 3, and 4 are correct O 1, 2, 4, and 5 are correct O 1, 2, and 4 are correct all are correct F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 )) 24 & 4 6. 8 R т E F н

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter25: Electric Potential

Section: Chapter Questions

Problem 25.52P: Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which...

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Is it possible for a conducting sphere of radius 0.10 m to hold a charge of 4.0 C in air? The minimum field required to break down air and turn it into a conductor is 3.0 106 N/C.
The dome of a Van de Graaff generator receives a charge of 2.0 104 C. Find the strength of the electric field (a) inside the dome, (b) at the surface of the dome, assuming it has a radius of 1.0 m, and (c) 4.0 in front the center of the dome. Hint: See Section 15.5 to review properties of conductors in electrostatic equilibrium. Also, note that the points on the surface are outside a spherically symmetric charge distribution; the total charge may be considered to be located at the center of the sphere.
The dome of a Van de Graaff generator receives a charge of 2.0 104 C. Find the strength of the electric field (a) inside the dome, (b) at the surface of the dome, assuming it has a radius of 1.0 m, and (c) 4.0 in front the center of the dome. Hint: See Section 15.5 to review properties of conductors in electrostatic equilibrium. Also, note that the points on the surface are outside a spherically symmetric charge distribution; the total charge may be considered to be located at the center of the sphere.
A thin, square, conducting plate 50.0 cm on a side lies in the xy plane. A total charge of 4.00 108 C is placed on the plate. Find (a) the charge density on each face of the plate, (b) the electric field just above the plate, and (c) the electric field just below the plate. You may assume the charge density is uniform.
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Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt. Charge can be added until the electric field at the surface of the dome becomes equal to the dielectric strength of air. Any more charge leaks off in sparks as shown in Figure P25.52. Assume the dome has a diameter of 30.0 cm and is surrounded by dry air with a "breakdown" electric field of 3.00 106 V/m. (a) What is the maximum potential of the dome? (b) What is the maximum charge on the dome?