Two infinitely long parallel conducting plates having surface charge densities $+\sigma$ and $-\sigma$…
Two infinitely long parallel conducting plates having surface charge densities $+\sigma$ and $-\sigma$ respectively, are separated by a small distance. The medium between the plates is vacuum. If $\varepsilon_{0}$ is the dielectric permittivity of vacuum, then the electric field in the region between the plates is
zero
$\frac{\sigma}{2 \varepsilon_{0}}$ volts/meter
$\frac{\sigma}{\varepsilon_{0}}$ volts/meter
$\frac{2 \sigma}{\varepsilon_{0}}$ volts/meter
Solution
Electric field between the plates is
$=\frac{\sigma}{2 \varepsilon_{0}}-\frac{(-\sigma)}{2 \varepsilon_{0}}$
$=\frac{\sigma}{\varepsilon_{0}}$ volt/meter
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