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Unformatted text preview: EXAMPLE: Consider a uniformly charged ring of radius a and total charge Q. (a) At a point P a distance x from the centre of the d
ring along a pm‘ icular line through the centre "a, 2 1/2
of the ring, finde contribution to V from a "*43/5 ~ .. (0 'Hﬂ
charge element q. 3 ‘ ‘ ~ . 0; ~..
(b) Sum(integrate) over the whole charge I ‘ ' ' ' ’ ‘ ' X ' ' ' ' ’ '2'. P
distribution to find V at the point P.
(c) Use the result from (b) to calculate the electric
field at P.
§ J 6?
(a) Cg V 5 ka lLdt Example: Consider a uniformly rod of length L and total Charge Q. Find the
electric potential at a distance a along the rod axis from one end. Example: Consider a uniformly rod of length L P
and total charge Q. Find the electric potential at a distance a from one end along a line
perpendicular to the rod. (if/Larva a? €/€Ixmzﬂ 025172§ '2 ‘
CohlLr/é. /’0 Vﬂwm WEJi/S £2, /\ m its, 3 ‘1; E i 1‘ ...
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- Winter '12