For the circuit of Fig. 30.17, let C = 15.0 nF L = 22 mH and R = 75.0 ?
(a) Calculate the oscillation freque~y of the circuit once the capacitor bas been charged and the switch bas been connected to point a
(b) How long will it take for the amplitude of the oscillation to decay to 10.0% of its original value?
(c) What value of R would result in a critically damped circuit?