Showing 191 to 200 of 627 Questions
  • A thin nonconducting rod with a uniform distribution of positive charge Q is bent into a circle of radius R (Figure). The central perpendicular axis through the ring is a z axis, with the origin at the center of the ring. What is the magnitude of the electric field due to the rod at(a) z = 0 and(b) z = ∞?(c) In terms of R, at what posit

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    851
  • A thin rod of length ℓ and uniform charge per unit length 3 lies along the x axis, as shown in Figure P23.35. (a) Show that the electric field at P, a distance y from the rod along its perpendicular bisector, has no x component and is given by E = 2ke3 sin +0/y. (b) What If? Using your result to part (a), show that the field of

    1
    1112
  • A thin straight rod of length 2a carrying a uniformly distributed charge q is located in vacuum. Find the magnitude of the electric field strength as a function of the distance r from the rod's centre along the straight line (a) perpendicular to the rod and passing through its centre; (b) Coinciding with the rod's direction (at the points

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    115
  • A thin wire ring of radius r carries a charge q. Find the magnitude of the electric field strength on the axis of the ring as a function of distance l from its centre. Investigate the obtained function at l >> r. Find the maximum strength magnitude and the corresponding distance l. Draw the approximate plot of the function E(l).

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    131
  • A thin wire ring of radius r has an electric charge q. What will be the increment of the force stretching the wire if a point charge q0 is placed at the ring's centre?

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    145
  • A thread carrying a uniform charge λ per unit length has the configurations shown in Fig. 3.2 a and b. Assuming a curvature radius R to be considerably less than the length of the thread, find the magnitude of the electric field strength at the point O.

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    2753
  • A uniform electric field exists in a region between two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 2.0 cm away, in a time l.5 x 10-8 s. (a) What is the speed of the electron as it strikes the second plate? (b) What is the magnit

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    160
  • A uniform electric field exists in the region between two oppositely charged plane parallel plates. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate, 1.60 cm distant from the first, in a time interval of 1.50 X 10-6 s. (a) Find the magnitude of the electric field.

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    572
  • A uniform electric field of magnitude 640 N/C exists between two parallel plates that are 4.00 cm apart. A proton is released from the positive plate at the same instant that an electron is released from the negative plate. (a) Determine the distance from the positive plate at which the two pass each other. (Ignore the electrical attrac

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    441
  • A uniform line charge extends from x = –2.5 cm to x = +2.5 cm and has a linear charge density of λ = 6.0 nC/m (a) Find the total charge. Find the electric field on the y axis at (b) y = 4 cm, (c) y = 12 cm, and (d) y = 4.5 m. (e) Find the field at y = 4.5 m, assuming the charge to be a point charge, and compare your result

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    127
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