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21 December, 22:41

A capacitor is charged by a 150.0-V power supply, then disconnected from the power and connected in series with a 0.280-mH inductor. Calculate: (a) the oscillation frequency of the circuit; (b) the energy stored in the capacitor at time (the moment of connection with the inductor);

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  1. 22 December, 00:29
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    Frequency = 1 / (2π√LC)

    Frequency = 1 / (2π · 2.8 x 10⁻⁴ · C)

    Frequency = 1 / (1.759 x 10⁻³ · C)

    Frequency = (568.4 / C) Hz.

    Energy stored in a capacitor = 1/2 C V²

    Energy = 1/2 C · 2.25 x 10⁴

    Energy = (11,250 · C) Joules

    Neither of the answers can be completely specified without knowing the value of the capacitor.
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