An oscillating LC circuit has a resonant frequency of 1.2 × 106 Hz. The diagram shows the system at t = 0 s when there is no charge on the capacitor and the current is in the direction shown. At this time, the energy stored in the inductor is 2.5 × 10-7 J.
-Which one of the following statements is true for this circuit?
A) When the current in the inductor is zero, I/ t = 0 A/s.
B) The circuit will allow dc as well as ac current to flow.
C) The magnetic field in the inductor is a maximum at t = 0 s.
D) The charge on the capacitor will be a maximum at t = 4.2 × 10-7 s.
E) As the current through the inductor decreases, the induced emf in the coil is directed opposite to the direction of the current.
Correct Answer:
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