Two charges q 1 and q 2 are separated by a distance of 30 cm. A third charge q 3 initially at ' C ' as shown in the figure, is moved along the circular path of radius 40 cm from C to D. If the difference in potential energy due to movement of q 3 from C to D is given by 
, the value of K is:
Text Solution
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To determine the value of K for the given electrical potential scenario, we start by calculating the potential at points C and D.
Potential at Point C:
The potential at point 
, is given by the sum of the potentials due to charges q 1 and q 2 :
Potential at Point D:
Similarly, the potential at point 
, is:
Change in Potential Energy:
The change in potential energy 
when q 3 moves from C to D is:
Substituting the expressions for V D and V C , we get:
Simplifying the Expression: By simplifying the expression, we find:
Thus, the value of K is 
.
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