THREE CONDUCTING SPHERES - CHARGE Two Conducting spheres rest on insulating stan
ID: 1283169 • Letter: T
Question
THREE CONDUCTING SPHERES - CHARGE Two Conducting spheres rest on insulating stands. Sphere is smaller than Sphere A. Both spheres are initially uncharged and they are touching, A third Conducting sphere, C. has a positive charge. It is brought close to (but not touching) Sphere B as shown. (a) Is the net charge on Sphere A at this time (i) positive, (ii) negative, or (iii) zero? _____ Explain your reasoning. (b) Is the net charge on Sphere B at this time (i) positive, (ii) negative, or (iii) zero? Explain your reasoning. (c) Is the magnitude of the net charge on Sphere A (i) greater than, (ii) Less than, or (iii) equal to the magnitude of the net charge on Sphere B? ________ Explain your reasoning.Explanation / Answer
a)
Positive
reason as the sphere C is nearer to sphere B all the electrons will be attracted
towards sphere C and electrons in sphere move into sphere B as they r in touch with each other
so there is a deficit of electrons in sphere A
so sphere A is positive
b)
negative
as sphere is bought closer to all the electrons from A will enter in to sphere B , so it aquires
negative charge
c)
equal to the magnitude of sphere B
as the no of electrons that enters into the sphere B leaves same number of deficit of
electrons in sphere A
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