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A uniform semicircular ring of radius R is in yz plane with its centre at the origin. The half ring carries a uniform linear charge density of lamda. (a) Find the x, y and z component of Electric field at a point P(x, 0, 0) on the axis of the ring. (b) Prove that the field at P is directed along a line joining the centre of mass of the half ring to the point P. |
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Answer» (b). `E_y=0` (c). `E_(z)=-(2KlamdaR^(2))/((R^(2)+x^(2))^(3//2))` |
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