A total amount of positive charge Q is spread onto a thin non-conducting circular annulus of inner radius a and outer radius b. The charge is distributed in a way so that the charge density per unit area is given by ? = ? ? 3 , where r is the distance from the center of the
A total amount of positive charge Q is spread onto a thin non-conducting circular annulus of inner radius a and outer radius b. The charge is distributed in a way so that the charge density per unit area is given by ? = ? ? 3 , where r is the distance from the center of the
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A total amount of positive charge Q is spread onto a thin non-conducting circular annulus of
inner radius a and outer radius b. The charge is distributed in a way so that the charge density
per unit area is given by ? =
?
?
3
, where r is the distance from the center of the annulus to
any point on it and k is a constant.
(a) Find an expression for the total charge Q on the annulus.
(b) Find an expression for the potential V at the center of the annulus in term of Q, a and b
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