Answer:
In Fig. 4(EP).32, let be the total current from the
source. It is divided into two parts : through
R and through series combination of
C and L, such that
As ??(i)
If is charge on C at time t, then
for series combination of C and L,
??.(ii)
Let
??.(iii)
and
Putting
in (ii), we get
If
??..(iv)
From
(iii),
using
(iv),
Taking
??(v)
From (i) and (v), we find that and
are out of phase.
Now,
Put
and
where
and
and
Hence,
or
This
is the expression for impedance Z of the circuit.
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