Factors Affecting Capacitance

How Capacitors Work

Have a look : Types Of Capacitor

A cylindrical capacitor is a 

parallel plate capacitor that has been rolled up with an 

insulating layer between the plates

4~ Capacitor in Series & Parallel

Capacitors in parallel

* have the same applied voltage

* their capacitance add up

* charge is apportioned among them by size

* using the schematic diagram to visualize parallel plates, it is apparent that each capacitor contributes to the total surface area.

capacitors in parallel

Capacitors in series

* the capacitors each store instantaneous charge build-up equal to that of every other capacitor in the series

* the total voltage difference from end to end is apportioned to each capacitor according to the inverse of its capacitance

* the entire series acts as a capacitor smaller than any of its components.

capacitors in series

NOTE : Capacitors are combined in series to achieve a higher working voltage, for example for smoothing a high voltage power supply. 

LINK LINK LINK ...

this is the related link in this subtopic ..



http://www.technologystudent.com/elec1/capac1.htm

feel free to take a look :)

Here you go : KNOWLEDGE INPUT

Electrolytic capacitors are ‘polarised’ which means they have a positive and negative lead and must be positioned in a circuit the right way round (the positive lead must go to the positive side of the circuit).

They also have a much higher capacitance than non-electrolytic capacitors.

Non-electrolytic capacitors usually have a lower capacitance.

They are not polarised (do not have a positive and negative lead) and can be placed anyway round in a circuit.

They are normally used to smooth a current in a circuit.

CAPACITANCE - means the value of a capacitor.

3~ Calculating The Capacitance

A Parallel-Plate Capacitor

A Cylindrical Capacitor

A Spherical Capacitor

An Isolated Sphere

how to derive :