Capacitance and Capacitor
We often store things to use it later
Like this water jar
Or a jar of pulses
Similarly we can store electrical energy too
Capacitor is a device that stores energy in the form of electric charge
A capacitor consists of two electrical conductors or metallic plates separated by a dielectric medium
And are used in most of electronic devices where they provide sudden burst of energy on demand
We always need to quantify the stored energy
For example we quantify water stored in a bottle
Likewise to quantify capacitors we use a concept called capacitance
Capacitance is the measure of energy storing ability of a capacitor
A capacitor should placed in a power circuit with a given applied voltage(DC/AC)
Farad is the S.I unit of capacitance but it can be measured in units like pico Farad or nano Farad or micro Farad
Now letâ€™s learn some formulas to calculate capacitance
Capacitance is measured by the amount of charge stored the voltage applied
Here , C is Capacitance,Q is charge held on plates and V is voltage
Another way of measuring capacitance would be using distance between plates , area of plates and dielectric constant of the plate
and the formula is
Revision
Capacitor is a device , which store electric charge
Capacitance is the measure of capacitorâ€™s ability to store charge and its S.I unit is Farad
keep learning!