[BT4, CO2] In ac circuit, resistance 5 ohm is connected with capacitor having capacitive reactance 12 ohm. Supply of 260 Vis
connected to the dircuit. Calculate the voltage across resistance.
Select one:
300 V
200 V
240 V
100 V
Answers
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Given:
A circuit is having a 5Ω resistance and a capacitor with 12Ω capacitive reactance in series with a 260V source.
To Find:
The voltage across the resistance.
Solution:
We know that the total impedance of an RC series ac circuit is given by
where is the resistance of the circuit and is the capacitive reactance of the circuit
So impedance of this circuit will be
Ω
Using Ohm's law, the current through the circuit,
Now voltage across the resistor,
Hence, the voltage across the resistor is equal to 100V.
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