Question

1. use the directions shown below to indicate the approximate direction of the net electric force on the positive charge, q1. a) direction a b) direction b c) direction c d) direction d

Explanation:

Step1: Analyze forces due to $q_1$ and $q_2$

The force between two charges is given by Coulomb's law $F = k\frac{q_1q_2}{r^2}$. Charge $q_1$ (negative) will attract the positive charge $q_3$ along the line joining them (in the negative - y direction). Charge $q_2$ (negative) will attract the positive charge $q_3$ along the line joining them (in the negative - x direction).

Step2: Determine the net - force direction

The net force on the positive charge $q_3$ due to the two negative charges $q_1$ and $q_2$ will be in the direction that combines the individual force directions. The combination of a force in the negative - x direction and a force in the negative - y direction results in a net force in the direction D.

Answer:

D. Direction D