Question

The figure below shows the forces that three charged particles exert on each other. Which of the four situations shown can be correct?

• A. All the four situations.
• B. None of the four situations.
  
• C. Situations $\text{II, III}$
• D. Situations $\text{II, III \& IV}$
  

Answer 1

The correct option is C Situations $\text{II, III}$


In situation $\text{I}$, $q_1$ and $q_2$ are unlike and $q_1$ and $q_3$ are like. So, $q_2$ and $q_3$ should attract, but they are shown repelling. Hence, the given situation is wrong.

In situation $\text{II}$, $q_1$, $q_2$ and $q_3$ are like and are shown repelling. Hence, the given situation is correct.

In situation $\text{III}$, $q_1$ and $q_2$ are unlike and $q_1$ and $q_3$ are like. So, $q_2$ and $q_3$ should attract and are shown attracting. Hence, the given situation is correct.

In situation $\text{IV}$, $q_1$ and $q_2$ are unlike and $q_1$ and $q_3$ are unlike. So, $q_2$ and $q_3$ should repel, but they are shown attracting. Hence, the given situation is wrong.

Therefore, option $\left(C\right)$ is correct.