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  4. Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and magnitude 27 × 10-22 C m-2. The electric field vecE in region II in between the plates is

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Q. Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and magnitude $27 \times 10^{-22}\, C\, m^{-2}$. The electric field $\vec{E}$ in region $II$ in between the plates isPhysics Question Image

Electric Charges and Fields

Solution:

The value of $\vec{E}$ in the region $II$, in between the plates $=\frac{\sigma}{\varepsilon_{0}}$
$=\frac{27\times10^{-22}}{8.85\times10^{-12}}$
$=3.05\times10^{-10}\,N\,C^{-1}$