Alternating Current

Related Questions

• A coil of inductance $L$ has an inductive reactance of ${X_L}$ in an AC circuit in which the effective current is $I$. The coil is made from a super-conducting material and has no resistance. The rate at which power is dissipated in the coil is

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• An inductor $L$ and a capacitor $C$ are connected in the circuit as shown in the figure. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero ampere

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• In an ac circuit $I = 100 sin 200 \omega t$. The time required for the current to achieve its peak value will be

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• In an ac circuit, the current is given by $i = 5\sin \,\left( {100\,t - \frac{\pi }{2}} \right)$ and the ac potential is$V = 200\sin \,(100)\,volt.$ Then the power consumption is

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• $L$, $C$ and $R$ denote inductance, capacitance and resistance respectively. Pick out the combination which does not have the dimensions of frequency

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