Question

Two parallel plates are charged to have a pd of 100V. Each has an area of 0.05m² and they are separated 0.5 mm apart. Calculate electric charge on each plate

Answer 1

$C=q/U$

$C=\epsilon_0A/d$

$q=\epsilon_0AU/d=8.85\cdot10^{-12}\cdot0.05\cdot100/0.0005=8.85\cdot10^{-8}\ (C)$