Question

the saint
Three point-charges qı (=-1 uC), q2 (= +2 uC) and
q3 (=-1 uC) are placed in air in a line. The distance
between q
and
92
is 1 m and that between 42 and 43
is also 1 m. Calculate the electrostatic energy of the
Ans.-31.5 mJ.
system.​

Answer 1

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