50. The switch is connected to position ..-阿摩線上測驗
50. The switch is connected to position a for a long time interval as shown in the figure. At t = 0, the
switch is thrown to position b. After this time, what are the frequency of oscillation of the LC
circuit?
(A) 159 Hz
(B) 359 Hz
(C) 559 Hz
(D) 759 Hz
(E) 959 Hz