Two large, thin metal plates are parallel and close to each other. ...

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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 \( 18 \times 10^{-22} \mathrm{Cm}^{-2} \). The electric field between the plates is:
(A) \( 2.03 \times 10^{-10} \mathrm{NC}^{-1} \)
(B) \( 3.03 \times 10^{-10} \mathrm{NC}^{-1} \)
(C) \( 2.03 \times 10^{-12} \mathrm{NC}^{-1} \)
(D) \( 4.03 \times 10^{-10} \mathrm{NC}^{-1} \)
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