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Each plate of a parallel-plate air-filled capacitor has an area of 0.3 m², and the separation of the
plates is 3 mm. An electric field of 5x106 V/m is present between the plates. What is the surface
charge density on the plates in unit of μµC/m²? (ε = 8.85 × 10-12 c²/N • m²)

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