1can u tell wat d correct ans is PLZZZZZZZZZZZZZZZZZZ
Q.) 3 insulated conducting spheres A, B and C of radii a, b, c respectively (a<b<c) has charges q1, q2, q3 respectively. Find their-
(i) potentials
(ii) the reduction in the potential of the outermost sphere when the innermost is earth.
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5 Answers
1i guess the spheres r concentric
if it is so,
sphere A will have potential due to spheres A,B,C n value will be:
(kq1\a)+(kq2\b)+(kq3\c)...............(1)
similarly sphere B will be having potential due to A,B,C
(kq1\b)+(kq2\b)+(kq3\c)
{since,the point is outside the sphere A,thus charge on A behave as point charge
n also the point is inside C thus potential at that point is as same as on the surface of C
now for c;
(kQ1\c)+(kq2\c)+(kq3\c).................(2)
i m not so sure abt second ans but i did it dis way:
as the sphere A is grounded thus the net chrge on A becomes:
-a[(q2\b)+(q3\c)] from eqn 1
on substituting the values in eqn 2
we get potential on C as:
kq2[1\c-1\b]
n so net reduction is
(kq1\c)+(kq2\b)+(kq3\c)
is this correct
plzzzzzzzzzzzzzzzz telll
1Two +ve point charges. each of magnitude q,are fixed on the points y=+a and y=-a.Suppose a positively charged particle of the charge q' and mass m is displaced slightly 4m the origin in the direction of the axis. .. . then find out a) What is its speed at infinity? b)If the particle is projected toward the left along the x-axis from a point at a large distance to the right of the origin, with a velocity half that acquired in part (a), at what distance from the origin will it come to rest?? (c) If a negatively charged particle were released from rest on the x-axis, at a very large distance to the left of the origin, what would be its velocity as it passed the origin??