Alternating Current

Related Questions

• An alternating current of frequency $f$ is flowing in a circuit containing a resistance $R$ and a choke $L$ in series. The impedance of this circuit is

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• A resonant ac circuit contains a capacitor of capacitance ${10^{ - 6}}F$ and an inductor of ${10^{ - 4}}H.$ The frequency of electrical oscillations will be

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• In a series LCR circuit, operated with an ac of angular frequency $\omega $, the total impedance is

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• In a region of uniform magnetic induction $B = {10^{ - 2}}\,tesla$, a circular coil of radius $30 cm$ and resistance $\pi ^2$ ohm is rotated about an axis which is perpendicular to the direction of $B$ and which forms a diameter of the coil. If the coil rotates at $200 rpm$ the amplitude of the alternating current induced in the coil is

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• A coil has $L = 0.04 H$ and $R = 12\,\Omega $. When it is connected to $220V$, $50H$z supply the current flowing through the coil, in amperes is

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