45. In an alternating current circuit, resistance, capacitor and inductance coil are connected in series to an alternating current source. Potential difference the ends of them are 40V. 20 V and 50 V respectively. Find the voltage of the source in the circuit and power factor.
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Explanation: Reactance is the opposition offered by capacitor and inductor in a circuit to the flow of AC current in the circuit. It is quite similar to resistance but reactance varies with the frequency of the ac voltage source. It is measured in ohms.
If we look at conductors that are carrying alternating current then we will find that reactance is always present along with resistance. Moreover, reactance also appears in shorter intervals as the direct current changes while approaching or departing from a steady flow
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