Question

The distance between the plates of a paraallel plate capacitors is d. If a metallic plate of thickness $\frac{d}{2}$ is placed between the plates what will be the effect on the capacitances

Answer 1

For metallic plate

Capacitance C $\frac{{\epsilon }_{0}A}{d-t}=\frac{{\epsilon }_{0}A}{d-\frac{d}{2}}=\frac{2{\epsilon }_{0}A}{d}2C$