A series LCR circuit with R=20 Ω, L=1.6 H and C=40 μ F is connected to a variable frequency a.c. source. The inductive reactance at resonant…

A series LCR circuit with $\displaystyle R=20 \Omega, L=1.6 \mathrm{H}$ and $\displaystyle C=40 \mu \mathrm{~F}$ is connected to a variable frequency a.c. source. The inductive reactance at resonant frequency is $\displaystyle \_\_\_\_$ $\displaystyle \Omega$.