A capacitor consists of two circular parallel plates with diameter D.The plate separation is d,and there is a dielectric with constant k between the plates? Which of the following will double the capacitance.

Question

Quizplus · Accepted Answer

The capacitance of a parallel plate capacitor is directly proportional to the dielectric constant (k) and the area of the plates (A), and inversely proportional to the distance (d) between the plates. Doubling the diameter (D) of the plates increases the area, but halving the distance (d) between the plates has a more direct effect on doubling the capacitance, as the formula for capacitance (C) is C = ε₀(kA/d), where ε₀ is the permittivity of free space, A is the area of the plates, and d is the distance between the plates.

A Capacitor Consists of Two Circular Parallel Plates with Diameter