62CHAPTER 16 (c) The total potential at point Pis ()44121.83.610 V1.8PVVV=+=+− ×=− ×(d) The work required to move a charge q3.0 Cµ=to point Pfrom infinity is ( )( )643.010V05.410JPWqVqV V−−∞=∆ =−=×− =−×2C1.810−×16.57The stages for the reduction of this circuit are shown below. ±²³³´±µ¶²³³´±µ¶²³³´±µ·²³³´±µ¸²³³´±µ¹²³³´±µº²³³´±µ¸»²³´¼½²³³´±µ¸»²³´¼¶²³³´±µ¹²³³´±µ¾º²³´±µ¹²º±´±µ¸»²³´¼¸»²³´¼º²º±´±µ¸²³³´±µThus, 6.25 FeqC=16.58(a) Due to spherical symmetry, the charge on each of the concentric spherical shells will be uniformly distributed over that shell. Inside a spherical surface having a uniform charge distribution, the electric field due to the charge on that surface is zero. Thus,
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