Parallel Plate Capacitor
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Maximum electric field which a dielectric medium can withstand without breakdown and prevent leaking of charge is called dielectric strength . Air dielectric strength is 3 x 10 6 Vm -1 .
o SI unit of capacitance is F ( Farad ).
Parallel Plate Capacitor
A parallel plate capacitor is a capacitor with 2 large plane parallel conducting plates separated by a small distance .
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Electric field inside the capacitor has a direction from positive to negative plate .
For very small ‘ d ’, the electric field is considered as uniform . For large ‘ d ’, the electric field is non-uniform and it bends around the corners of the plate which is called fringing of the field .