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capacitor is a device to store charge .it is based on the concept that when the potential of the capacitor is decreased it can gain some more charge so Q = CV where V is potential and Q is the charge stored then C is the capacitance. capacitance is the ability of the capacitor to store charge. expression for capacitance is C=ɛA/d where ɛis permittivity and A is area of capacitor plates ,d is plate separation.

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14y ago
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14y ago
capacity of a capacitor:

Capacity or Capacitance of a capacitor is the measure of how much charge must be put on the plate to produce certain potential difference between them: greater the capacitance, the more charge is required.

The SI unit of capacitance that follows the following equation (i), is the coulomb per volt (c/v):q = C/V ........(i).Where q is the charge on the plates of a capacitor, and V is the Potential difference between their plates.

This occurs so often that it is given a special name, the Farad (F) that is:1 Farad = 1 coulomb per voltOR1 F = c/v

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10y ago

A capacitor is used to store electric charge. The amount of charge that it stores is proportional to voltage - more voltage means more charge. The capacitance tells you how much charge the capacitor can store when there is 1 volt across it.

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9y ago

The capacitance of a capacitor is usually marked on the case and is in units of Farads. It is a measure of the capacity to store electric charge.

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Q: What is an importance of capacitance?
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