(i) A metallic sphere A of radius 1.00 cm is several centimeters away from a met
ID: 2027374 • Letter: #
Question
(i) A metallic sphere A of radius 1.00 cm is several centimeters away from a metallic spherical shell B of radius 2.00 cm. Charge 450 nC is placed on A, with no charge on B or anywhere nearby. Next, the two objects are joined by a long, thin, metallic wire (as shown in the figure below), and finally the wire is removed. How is the charge shared between A and B?0 on A, 450 nC on B
90.0 nC on A and 360 nC on B, with equal surface charge densities
150 nC on A and 300 nC on B
225 nC on A and 225 nC on B
450 nC on A and 0 on B
(ii) A metallic sphere A of radius 1 cm with charge 450 nC hangs on an insulating thread inside an uncharged thin metallic spherical shell B of radius 2 cm. Next, A is made temporarily to touch the inner surface of B. How is the charge then shared between them? Choose from the same possibilities.
0 on A, 450 nC on B
90.0 nC on A and 360 nC on B, with equal surface charge densities
150 nC on A and 300 nC on B
225 nC on A and 225 nC on B
450 nC on A and 0 on B
Explanation / Answer
Ans: (c) 150 nC on A, 300 nC on B.
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