A 50 μF electrolytic capacitor has aluminium plates of area 600 cm2 with an oxide dielectric of relative permittivity 20. What is the thickness of the dielectric? A 1 μF capacitor is made up of two...

A 50 μF electrolytic capacitor has aluminium plates of area 600 cm2 with an oxide dielectric of relative permittivity 20. What is the thickness of the dielectric?

A 1 μF capacitor is made up of two strips of metal foil, width 100 mm, separated by a paper dielectric of thickness 0.02 mm and relative permittivity 3.0. What will the length of each strip of metal foil be?