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Point charges Q1 ,Q2 , and Q3 reside on three corners of a square with sides of 1m ; the distance from Q2 to P3 is 2m (see diagram).
(a) What is the electric potential,V , at P1 ? (Normalize the potential to be zero at infinity and give your answers in Volts).
What is V at P2 (in Volts)?
What is V at P3 (in Volts)?
(b) Are there points or surfaces in space (other than infinity) where V is zero?
(c) What is the electrostatic potential energy of the system? Express your answer in Joules.
Please some one answer.