Alternating Current

Related Questions

• A $120$ volt ac source is connected across a pure inductor of inductance $0.70$ henry. If the frequency of the source is $60$ Hz, the current passing through the inductor is

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• In an ac circuit the reactance of a coil is $\sqrt 3 $ times its resistance, the phase difference between the voltage across the coil to the current through the coil will be

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• An inductive circuit contains a resistance of $10$ ohm and an inductance of $2.0$ henry. If an ac voltage of $120$ volt and frequency of $60$ Hz is applied to this circuit, the current in the circuit would be nearly

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• In a L-R circuit, the value of $L$ is $\left( {\frac{{0.4}}{\pi }} \right)\;henry$ and the value of $R$ is $30$ ohm. If in the circuit, an alternating e.m.f. of $200$ volt at $50$ cycles per sec is connected, the impedance of the circuit and current will be

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• An inductance of $1 mH$ a condenser of $10 \mu F$ and a resistance of $50 \Omega$ are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be

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