Resonance in Series LCR Circuit
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PHXII07:ALTERNATING CURRENT

356231 If the frequency of alternating e.m.f. is \(f\) in \(L - C - R\) circuit, then the value of impedance \(Z\) will change with log (frequency) as

1 Increases
2 Increases and then becomes equal to resistance, then it will start decreasing
3 Decreases and when it becomes minimum equal to the resistance then it will start increasing
4 Go on decreasing
PHXII07:ALTERNATING CURRENT

356232 An \(L - C - R\) series circuit consists of a resistance of \(10\Omega \), a capacitor of reactance \(60\Omega \) and an inductor coil. The circuit is found to resonate when put across a \(300V\), \(100Hz\) supply. The inductance of coil is (take, \(\pi = 3\)):

1 \(0.1\,H\)
2 \(0.01\,H\)
3 \(0.2H\)
4 \(0.02H\)
PHXII07:ALTERNATING CURRENT

356233 Total impedance of a series \(L C R\) circuit varies with angular frequency of the \(A C\) source connected to it as shown in the graph. The quality factor \(Q\) of the series \(L C R\) circuit is
supporting img

1 5
2 1
3 0.4
4 2.5
KECT - 2023
PHXII07:ALTERNATING CURRENT

356234 A resistor \({R}\), and inductor \({L}\) and a capacitor \({C}\) are connected in series to a source of frequency \({n}\). If the resonant frequency is \({n_{r}}\), then the current lags behind voltage when :

1 \({n=0}\)
2 \({n=n_{r}}\)
3 \({n < n_{r}}\)
4 \({n>n_{r}}\)
PHXII07:ALTERNATING CURRENT

356235 The resonant frequency of a circuit is \(f\). If the capacitance is made 4 times the initial values, then the resonant frequency will become

1 \(f/4\)
2 \(f/2\)
3 \(2f\)
4 \(f\)
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PHXII07:ALTERNATING CURRENT

356231 If the frequency of alternating e.m.f. is \(f\) in \(L - C - R\) circuit, then the value of impedance \(Z\) will change with log (frequency) as

1 Increases
2 Increases and then becomes equal to resistance, then it will start decreasing
3 Decreases and when it becomes minimum equal to the resistance then it will start increasing
4 Go on decreasing
PHXII07:ALTERNATING CURRENT

356232 An \(L - C - R\) series circuit consists of a resistance of \(10\Omega \), a capacitor of reactance \(60\Omega \) and an inductor coil. The circuit is found to resonate when put across a \(300V\), \(100Hz\) supply. The inductance of coil is (take, \(\pi = 3\)):

1 \(0.1\,H\)
2 \(0.01\,H\)
3 \(0.2H\)
4 \(0.02H\)
PHXII07:ALTERNATING CURRENT

356233 Total impedance of a series \(L C R\) circuit varies with angular frequency of the \(A C\) source connected to it as shown in the graph. The quality factor \(Q\) of the series \(L C R\) circuit is
supporting img

1 5
2 1
3 0.4
4 2.5
KECT - 2023
PHXII07:ALTERNATING CURRENT

356234 A resistor \({R}\), and inductor \({L}\) and a capacitor \({C}\) are connected in series to a source of frequency \({n}\). If the resonant frequency is \({n_{r}}\), then the current lags behind voltage when :

1 \({n=0}\)
2 \({n=n_{r}}\)
3 \({n < n_{r}}\)
4 \({n>n_{r}}\)
PHXII07:ALTERNATING CURRENT

356235 The resonant frequency of a circuit is \(f\). If the capacitance is made 4 times the initial values, then the resonant frequency will become

1 \(f/4\)
2 \(f/2\)
3 \(2f\)
4 \(f\)
For More Updates join with Us
PHXII07:ALTERNATING CURRENT

356231 If the frequency of alternating e.m.f. is \(f\) in \(L - C - R\) circuit, then the value of impedance \(Z\) will change with log (frequency) as

1 Increases
2 Increases and then becomes equal to resistance, then it will start decreasing
3 Decreases and when it becomes minimum equal to the resistance then it will start increasing
4 Go on decreasing
PHXII07:ALTERNATING CURRENT

356232 An \(L - C - R\) series circuit consists of a resistance of \(10\Omega \), a capacitor of reactance \(60\Omega \) and an inductor coil. The circuit is found to resonate when put across a \(300V\), \(100Hz\) supply. The inductance of coil is (take, \(\pi = 3\)):

1 \(0.1\,H\)
2 \(0.01\,H\)
3 \(0.2H\)
4 \(0.02H\)
PHXII07:ALTERNATING CURRENT

356233 Total impedance of a series \(L C R\) circuit varies with angular frequency of the \(A C\) source connected to it as shown in the graph. The quality factor \(Q\) of the series \(L C R\) circuit is
supporting img

1 5
2 1
3 0.4
4 2.5
KECT - 2023
PHXII07:ALTERNATING CURRENT

356234 A resistor \({R}\), and inductor \({L}\) and a capacitor \({C}\) are connected in series to a source of frequency \({n}\). If the resonant frequency is \({n_{r}}\), then the current lags behind voltage when :

1 \({n=0}\)
2 \({n=n_{r}}\)
3 \({n < n_{r}}\)
4 \({n>n_{r}}\)
PHXII07:ALTERNATING CURRENT

356235 The resonant frequency of a circuit is \(f\). If the capacitance is made 4 times the initial values, then the resonant frequency will become

1 \(f/4\)
2 \(f/2\)
3 \(2f\)
4 \(f\)
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PHXII07:ALTERNATING CURRENT

356231 If the frequency of alternating e.m.f. is \(f\) in \(L - C - R\) circuit, then the value of impedance \(Z\) will change with log (frequency) as

1 Increases
2 Increases and then becomes equal to resistance, then it will start decreasing
3 Decreases and when it becomes minimum equal to the resistance then it will start increasing
4 Go on decreasing
PHXII07:ALTERNATING CURRENT

356232 An \(L - C - R\) series circuit consists of a resistance of \(10\Omega \), a capacitor of reactance \(60\Omega \) and an inductor coil. The circuit is found to resonate when put across a \(300V\), \(100Hz\) supply. The inductance of coil is (take, \(\pi = 3\)):

1 \(0.1\,H\)
2 \(0.01\,H\)
3 \(0.2H\)
4 \(0.02H\)
PHXII07:ALTERNATING CURRENT

356233 Total impedance of a series \(L C R\) circuit varies with angular frequency of the \(A C\) source connected to it as shown in the graph. The quality factor \(Q\) of the series \(L C R\) circuit is
supporting img

1 5
2 1
3 0.4
4 2.5
KECT - 2023
PHXII07:ALTERNATING CURRENT

356234 A resistor \({R}\), and inductor \({L}\) and a capacitor \({C}\) are connected in series to a source of frequency \({n}\). If the resonant frequency is \({n_{r}}\), then the current lags behind voltage when :

1 \({n=0}\)
2 \({n=n_{r}}\)
3 \({n < n_{r}}\)
4 \({n>n_{r}}\)
PHXII07:ALTERNATING CURRENT

356235 The resonant frequency of a circuit is \(f\). If the capacitance is made 4 times the initial values, then the resonant frequency will become

1 \(f/4\)
2 \(f/2\)
3 \(2f\)
4 \(f\)
Join With Us for More Updates
PHXII07:ALTERNATING CURRENT

356231 If the frequency of alternating e.m.f. is \(f\) in \(L - C - R\) circuit, then the value of impedance \(Z\) will change with log (frequency) as

1 Increases
2 Increases and then becomes equal to resistance, then it will start decreasing
3 Decreases and when it becomes minimum equal to the resistance then it will start increasing
4 Go on decreasing
PHXII07:ALTERNATING CURRENT

356232 An \(L - C - R\) series circuit consists of a resistance of \(10\Omega \), a capacitor of reactance \(60\Omega \) and an inductor coil. The circuit is found to resonate when put across a \(300V\), \(100Hz\) supply. The inductance of coil is (take, \(\pi = 3\)):

1 \(0.1\,H\)
2 \(0.01\,H\)
3 \(0.2H\)
4 \(0.02H\)
PHXII07:ALTERNATING CURRENT

356233 Total impedance of a series \(L C R\) circuit varies with angular frequency of the \(A C\) source connected to it as shown in the graph. The quality factor \(Q\) of the series \(L C R\) circuit is
supporting img

1 5
2 1
3 0.4
4 2.5
KECT - 2023
PHXII07:ALTERNATING CURRENT

356234 A resistor \({R}\), and inductor \({L}\) and a capacitor \({C}\) are connected in series to a source of frequency \({n}\). If the resonant frequency is \({n_{r}}\), then the current lags behind voltage when :

1 \({n=0}\)
2 \({n=n_{r}}\)
3 \({n < n_{r}}\)
4 \({n>n_{r}}\)
PHXII07:ALTERNATING CURRENT

356235 The resonant frequency of a circuit is \(f\). If the capacitance is made 4 times the initial values, then the resonant frequency will become

1 \(f/4\)
2 \(f/2\)
3 \(2f\)
4 \(f\)