Question

The figure shows two charges of equal magnitude $q$ separated by a distance $2a$. As we move away from the charge situated at $x=0$ towards the charge situated at $x=2a$, which of the following graphs shows the correct behaviour of electric field?

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

For the distances close to $x=0$, the filed due to charge at $x=0$ is very high and is directed towards positive $X$ - direction.

As we move towards the other charge, the net electric filed becomes zero at $x=a$.

Thereafter, the influence of charge at $x=2a$ dominates. Net field increases and is directed towards negative $X$ - direction. It grows as we come closer to the charge at $x=2a$.

Hence, the correct behaviour of electric field is