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Chapter 24: Q75P (page 715)
An electric field of approximately is often observed near the surface of Earth. If this were the field over the entire surface, what would be the electric potential of a point on the surface? (Set at infinity.)
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(a) what is the electric potential energy of two electrons separated by 2.00 nm? (b) If the separation increases, does the potential energy increase or decrease?
Figure 24-29 shows four arrangements of charged particles, all the same distance from the origin. Rank the situations according to the net electric potential at the origin, most positive first. Take the potential to be zero at infinity.
Question: In Fig. 24-53, seven charged particles are fixed in place to form a square with an edge length of 4.0 cm. How much work must we do to bring a particle of charge +6Einitially at rest from an infinite distance to the center of the square?
Question: Two particles of chargesq1and q2 , are separated by distance in Fig. 24-40. The net electric field due to the particles is zero at x = d/4 .With V = 0 at infinity, locate (in terms of ) any point on the x-axis (other than at infinity) at which the electric potential due to the two particles is zero.
A particle of charge qis fixed at point P, and a second particle of mass mand the same charge qis initially held a distance r1 from P. The second particle is then released. Determine its speed when it is a distance from P. Let
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