00:01
This problem we have given the electrostatic potential energy of a system of a point charge q1, q2 and q3 located at the vertices or we can say corners of an equilateral triangle.
00:15
This is q1, this is q2 and this is q3.
00:22
So, side of this triangle is given 40 centimetre or we can say this is 0 .40 meter.
00:31
So we have to find the electrostatic potential energy.
00:35
So this electrostatic potential energy will be equal to k, q1, q2 by this distance s plus k, q2, q3 by s, plus k, q3, q1 by s.
00:52
Right? now we have given q1 is 1 micropoolam, q2 is minus 2 micropoolum, and q3 is 3 micropoola.
01:17
It's u will be equal to k 9 into 10 to the power 9 divide by s which is 0 .40 meter...