A parallel plate capacitor is made of two circular plates separated by a distance of 5mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 104 V/m, the charge density of the positive plate will be close to

Engineering

Physics

Parallel Plate Capacitor

Question

A parallel plate capacitor is made of two circular plates separated by a distance of 5mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 10⁴ V/m, the charge density of the positive plate will be close to

3 × 10^–7 C/m²

6 × 10⁴ C/m²

3 × 10⁴ C/m²

6 × 10^–7 C/m²

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$E = \frac{σ}{h \in_{0}}$

σ = 3 × 10⁴ × 2.2 × 8.85 × 10^–12

= 6 × 10^–7