(a) Find the electric potential at the origin. (b) A charge of –q is now moved from infinity to the origin. How much work was done by the external agent which moved the charge –q? (c) What is the direction of the electric force on the charge –q when it is at the origin?
(a) Find the electric potential at the origin. (b) A charge of –q is now moved from infinity to the origin. How much work was done by the external agent which moved the charge –q? (c) What is the direction of the electric force on the charge –q when it is at the origin?
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Question
An insulating rod of
length L has a total
charge of +Q uniformly
spread along its length.
The rod lies along the xaxis
with its left end
located at x = a.
(a) Find the electric potential at the origin.
(b) A charge of –q is now moved from infinity to the origin. How much work was done by the
external agent which moved the charge –q?
(c) What is the direction of the electric force on the charge –q when it is at the origin?
Transcribed Image Text:An insulating rod of
length L has a total
charge of +Q uniformly
spread along its length.
The rod lies along the x-
axis with its left end
+
located at x = a.
--L
-----
(a) Find the electric potential at the origin.
(b) A charge of -q is now moved from infinity to the origin. How much work was done by the
extemal agent which moved the charge -q?
(c) What is the direction of the electric force on the charge-q when it is at the origin?
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