Question

Two uniformly charged plates are pictured below, with point P located between the plates, as shown.
Which arrow best represents the direction of the electric field at point P?

• A. $\leftarrow$
• B. $\uparrow$
• C. $\downarrow$
• D. $\to$
• E. $\nearrow$

Answer 1

The correct option is C $\downarrow$

The electric field at P due to both charged plates is $E=\frac{\sigma }{2{ϵ}_0}+\frac{\sigma }{2{ϵ}_0}=\frac{\sigma }{{ϵ}_0}$ where $\sigma$ is the surface charge density.

The direction net field is towards the negative plate means downward $(\downarrow )$ because field lines are always directed from positive to negative charge.

Thus, option C will be correct.