let's consider a circuit such a way that there
are two points.
Point And point B and suppose I am
considering some resistors named as a R1 connected
like this, one more resistance R2 like this
and let's have R3 like this.so whenever resistances
are connected between two similar points
Then I can say the connection given is a parallel
connection.
And the equivalent resistance is
given like this.
the reciprocal of equivalent will be nothing
but addition of reciprocals of all of
them.
So suppose I am having n number of resistors
connected in parallel combination.
So for
this combination I can say, the reciprocal
of equivalent resistance will be nothing but
addition of
reciprocals of each of them.
suppose all of them are having the same value
which is nothing but
R, I can very well say the equivalent resistor
will be nothing but R divided by n, where
I can say
n is nothing but 
number of resistances in parallel.
So as far as the structure is concerned I
can
say if all the resistors are connected such
a way that these two common points will remain
intact
then all of them will be in parallel but as
per the electrical parameter is concerned
if I give the
battery to this particular connection I can
say, same voltage is applied to resistances.
That
implies those resistors are in parallel.
so here we have seen as far as structure is
concerned, if
resistances are bounded by two points, then
those resistors are in parallel but at the
same time
we have seen that whenever the same voltage
is getting applied across them then also we
can
say the resistors are in parallel.
So here we have seen parallel combination
of resistors.
Thank
you.
