Question

Question An electric dipole (two opposite oriented along the y axis as shown. You are not told which charge is positive, but you know the electric field at a point P on the y axis is as shown by the green arrow. of equal magnitude) is If the bottom charge is removed, which of the following best describes what happens to the electric field at P? Remove bottom charge O The magnitude decreases and the direction stays the same O The magnitude increases and the direction stays the same O The magnitude stays the same but the direction changes O The magnitude decreases and the direction changes O There is not enough information to tell Submit

Answer 1

Therefore E_1 = (k_1 q/r^2_1 - k_2 q/(r + r_1)^2) even if two charges opposite signs equation gives net electric field Therefore if we remove bottom charge electric field E_2 = ke q/r^2_1 Therefore E_2 > E_1 Magnitude of electric field increases, and the direction stages the same