A combination of two conducting bodies separated by insulator can store electric charge : Derive on expression for capacitance of the de vice with air as medium

A combination of two conducting bodies separated by insulator can store electric charge : The above device is called…………………

Two capacitors C_1 , and C_2 are connected in se ries. Derive an expression for the capacitance of the combination seperation

A capacitor consists of two circular metal disks, each of radius 15cm separated by 0.5mm (a) what is the capacitance of the device (b) what is the magnitude of the charge stored on each disk when the potential across the capacitor is 150V?

A parallel plate capacitor consists of two metallic plates separated by a small distance with a dielectric in between : A parallel plate air capacitor has charge densities + sigma and - sigma on the plates. Write the expres sion for electric field between the plates. What happens to the field if the separation between the plates is doubled?