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Capacitors
A capacitor, in its simplest form, consist of any two conducting medium (or) conducting surfaces seperated by an insulating medium exhibit the property of a capacitor. A capacitor stores energy in the form of an electric field. A capacitor is said to have more capacitance if it can store more charge per unit voltage and capacitance ( C = Q / V ). A capacitor is represented by the alphapet C. The unit of capacitance is Farad denoted by F.
How capacitor works
From the above diagram, when the supply is given across the two electrodes. The electrons from the negative terminal of the voltage source get stored on a plate 1. The protons from the positive terminal of the voltage source get stored on a plate 2. As the dielectric medium (mica) is placed between the plates, it restrict the attraction of positive and negative charges. As a result, the electric field exist which gets deposited in the mica The capacitor voltage becomes equal to the applied voltage When the capacitor is fully charged. The voltage across the capacitor remains even after the voltage source is removed or disconnected.
capacitors in parallel
When two or more capacitors are connected in parallel, by adding the pairs of capacitor plates together. The total capacitance are increased. When C1, C2, C3 etc. are connected in parallel, then the total capacitance Ct becomes Ct = C1 + C2 + C3.
capacitors in series
When two or more capacitors are connected in series, by adding the pairs of capacitor plates. The total capacitance are decreased drastically. When C1, C2, C3 etc. are connected in series, then the total capacitance Ct becomes 1/Ct = 1/C1 + 1/C2 + 1/C3
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