Capacitor and Capacitance

Capacitor & Capacitance

, Capacitor &Capacitance
You potential
Capacitor is a device to store
energy .
can store
energy as



energy in electric field .




Comparison with
battery
-




Similarities -


Differences .
-




Ii ) Both can store lit Release of energy
energy . .




Iii ) can
generate Potential difference ii}
way to store
energy .




in a circuit . iii} Amount of energy stored

in it .




let us understand it with the help of Consider dam
an
analogy . a


stores amount of water .
it has small
gates to release water for
various needs .
Now if the dam breaks down and a
huge amount


That
water is released at once .




way a
battery and a
capacitor works .




A
battery supplies a constant amount of energy keeping a constant

potential difference ,
but a
capacitor releases a
huge amount of
at once It has such as in camera flash
energy .




many uses .




A
battery stores
energy by chemical reaction ,
but for a
capacitor
has to be
it
charged to
get energy supply .




The stored in
capacitor less than that
amount
energy a is
generally
of a
battery .




Why we need a
capacitor ?

is that
When
people produced static electric
charges a problem static


charges does not holds for a
long period of time . Scientist worked on that