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The electric field due to a point charge q at a distance r from it is given by: E = k*q/r^2 where k is the Coulomb constant (9x10^9 Nm^2/C^2). For q1 at x=-1m, the distance from P is r1 = sqrt((1m)^2 + (1m)^2) = sqrt(2) m. So the electric field due to q1 at P Show more…
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