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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 of magnitude 16 × 10-22 C m-2. The electric field 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 of magnitude $16 \times 10^{-22}\, C\, m^{-2}$. The electric field between the plates is

Electric Charges and Fields

Solution:

Here, $E=\frac{\sigma}{\varepsilon_{0}}$
$=\frac{16\times10^{-22}}{8.854\times10^{-12}}$
$=1.8\times10^{-10}\,N\,C^{-1}$