\
Step 1:
\Find the parallel imepdance.
\ is in parallel to
.
is in series with
.
In any network, at resonance.
Compare the imaginary terms.
\Therefore,
\
\
From (a):
is in parallel to
.
is in series with
and
.
Find the current.
\Total current in the circuit at resonance is
\
\
\
\
\