Question

what is the formula of convert
rad/s to kHz.

e.g. When fresonance=920kHz, Bandwidth=?
Δω = RL/L + 1/(RC×C) = 50.48 k rad/s à fbandwidth= 8.034 kHz

Answer 1

1 Hz = 2π rad/s = 6.2831853 rad/s
and the back is:
1 rad/s = 1/2π Hz = 0.1591549 Hz

Answer 2

For calculate first convert C from pF to F ; RC , RL from KΩ in Ω and L from mH or uH in H