Two point charges are fixed on the -axis: at and at
PHYSICS · Subjective · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields
Problem
Two point charges are fixed on the x-axis: +6.0μC at x=0 and +2.0μC at x=0.30m. Take the positive x-direction as positive electric field direction.
(a) Write the mathematical expression for the magnitude of the electric field due to a single point charge at a distance r.
(b) Calculate the magnitude and direction of the net electric field at the point P located at x=0.15m.
(c) Determine the position(s) on the x-axis, other than at infinity, where the net electric field due to the two charges becomes zero. Express your answer as a distance from the charge at the origin.