Two uniformly large parallel thin plates having charge densities … - Vidyadip

Question

Two uniformly large parallel thin plates having charge densities +σ and –σ are kept in the X-Z plane at a distance 'd' apart. Sketch an equipotential surface due to electric field between the plates. If a particle of mass m and charge '-q' remains stationary between the plates, what is the magnitude and direction of this field?

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Answer

Depiction of equipotential surtace (Parallel to the X - Z plane) qE = mg$\Rightarrow\text{E} = \frac{\text{mg}}{\text{q}}: $ direction vertically downwards.

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