Question

If in the previous problem (problem 7). If charge 𝑞1 = −3.20 × 10−19𝐶 is added and placed at a distance (¾) R from 𝑞1. Find the magnitude and direction of net force on 𝑞1

Answer 1

electrostatic force:

$F=k\frac{q_1q_2}{R^2}$