Question

Consider the situation shown in figure. What are the signs of $q_{1}and{q}_2$?

• A. Both positive
• B. both negative
• C. $q_1$ is positive and $q_2$ is negative
• D. $q_1$ is negative and $q_2$ is positive

Answer 1

The correct option is D

$q_1$ is negative and $q_2$ is positive

The way we have defined electric field lines is that they originate from positive charge or infinity and terminate on negative charge or infinity. So if we have a closer look of the diagram we can see they originate from $q_2$ and terminate at $q_1$. This means $q_2$ is positive and $q_1$ is negative.