Last Activity: 7 Years ago
Dear Nikita
Electric potential at P.
VP = (1/4πεo)q{1/a + 1/a - 1/(a√5) -1/(a√5)}
= (1/4πεoa)2q(1- 1/√5)
Electric potential at O
VO = (1/4πεo)q (1/√2 + 1/√2 - 1/√2 - 1/√2)
= 0
VP – VO = (1/4πεoa)2q(1- 1/√5)
Total energy of the charge Q at point P = (1/4πεoa)2q(1- 1/√5) here KE = 0
Total energy of the charge Q at point 0 = (1/4πεoa)2q(1- 1/√5) here PE = 0
Thus, KE = (1/4πεoa)2q(1- 1/√5)
Taking 1/4πεo = k
KE = k2q (1- 1/√5)/a
= k2q (1- (1/5)1/2 )/a
Regards
Arun (askIITians forum expert)
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