Air variable pc mount. This means that a dielectric will not be able to conduct current. 10 53 Introduction To Capacitors Capacitance And Charge Parallel Plate Capacitor With Variable Dielectric By Dr Chinmoy Taraphdar Change in potential energy of a parallel plate capacitor as a dielectric slab is moved in the space between plates. Capacitor with variable dielectric . Its capacitance can be varied by rotating a knob which rotates the rotor across the stator with a dielectric between them. The variable capacitor with air dielectric was invented by the hungarian engineer dezso korda. Ask question asked 6 years 5 months ago. This type of variable capacitor is used for tuning is commonly used in lc circuits for radio tuning. Electric field in a capacitor with a dielectric with variable permittivity. The simplest air capacitors are made of two con