106zero.. it was discussed a few days back
using the method of electrical image,
V(centre) = 0 .. (plane gets replaced by a charge at its mirror image point with same magnitude but different sign)
Q.) A point charge q = 1C is placed at a distance 10 metres from the center of a neutral conductor. What is the potential on the surface of the conductor ? Give proper explanations !
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8 Answers
106
66Asish, are you sure? And isn't the answer dependent on the shape of the conductor?
106sorry sir, i misread the question as at the middle of the conductor... then yeah it will depend..
66So what would be the potential of the conductor if it were a sphere having a radius less that 10 cm?
1no dude , the answer is not zero... the answer is kq/r.
soln : there will be induced charges on the conductor because of the point charge 'q'.
But the net charge on the conductor is still Zero. Hence the potential because of the induced charges at the center of the conductor is 0.
So at the center of the conductor, the net potential = 0 + kq/r = kq/r
Also the potential of a conductor is constant.So the potential on the surface is also kq/r
1the conductor is a sphere. sorry i forgot to mention that...
