Hello friends in this video we are going
to see ideal voltage source so I will
consider the simple circuit like this so
we are studying ideal voltage source I
will consider a simple voltage source
like this connecting between points A and
B to this voltage source I will connect
one load resistor RL now the circuit is
closed so current IL will flow through
the load resistor and because of this IL
I will get a voltage VL across it now I
want to draw a graph of this ideal
voltage source meaning how the
characteristic of this ideal voltage
source look like graph of VL against IL
now let's make a simple table where I
can have IL VL
and value of RL because what I can say
VL is given as IL into RL and since
resistance hunted between points A and B
where voltage source V is present I can
see VL equal to V lets take a simple
example lets take RL as 1 ohm and I am
having this battery V of voltage say Phi
so by using this equation I can say VL
will remain phi but IL will be Phi
divided by 1 Phi ampere lets take RL
as 10 of again batteries of a 5 volt so
VL will remain Phi only and if I solve I
will get IL as 0.5 one more value we can
take let's take RL is hundred ohm
battery is remain unchanged 5 volt as it
is so IL is VL by RL
I'll get a answer 0.05 ampere and suppose
I want to plot graph of showing VL and
il I will get a graph like this
irrespective of any value of IL I will
get a VL  fixed 5 volt and that VL
value is same as voltage source V so
irrespective of any value of current IL
I will always have VL fixed and that is
decided by this voltage source
so this is another way of a representation
of ideal voltage source is that
irrespective of any load condition any
lower current still I am having a same
voltage so this is a characteristic of
ideal voltage source thank you
