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Chapter 24: Q64P (page 714)
A hollow metal sphere has a potential of with respect to ground (defined to be at ) and a charge of . Find the electric potential at the centre of the sphere.
The electric potential at the centre of the sphere is .
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Question: The smiling face of Fig. 24-49 consists of three items:
1.A thin rod of chargethat forms a full circle of radius;
2.a second thin rod of chargethat forms a circular arc of radius 4.0cm, subtending an angle of 900about the center of the full circle;
3.An electric dipole with a dipolemoment that is perpendicular to aradial line and has a magnitude of.What is the net electric potential atthe center?
In Fig. 24-40, particles with the chargesq1 = +5e and q2 = -15eare fixed in place with a separation of d = 24.0 cm. With electric potential defined to be V = 0at infinity, what are the finite (a) positive and (b) negative values of xat which the net electric potential on the x axis is zero?
An electron is released from rest on the axis of an electric dipole that has charge eand charge separation pm and that is fixed in place. The release point is on the positive side of the dipole, at distancefrom the dipole center. What is the electron鈥檚 speed when it reaches a pointfrom the dipole center?
Two tiny metal spheres Aand B,massand, have equal positive charge. The spheres are connected by a mass less non-conducting string of length d=1.00 m, which is much greater than the radii of the spheres. (a) What is the electric potential energy of the system? (b) Suppose you cut the string. At that instant, what is the acceleration of each sphere? (c) A long time after you cut the string, what is the speed of each sphere?
Consider a particle with charge q = 1.0 mC, point Aat distance d1 = 2.0 mfrom q, and point Bat distance d2 = 1.0 m. (a) If Aand B are diametrically opposite each other, as in Fig. 24-36a, what is the electric potential difference VA - VB? (b) What is that electric potential difference if Aand Bare located as in Fig. 24-36b?
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