Resonance in Series LCR Circuit
PHXII07:ALTERNATING CURRENT

356253 At resonance, the voltage drop across the resistor \({R}\) is
supporting img

1 \(20\,V\)
2 \(220\,V\)
3 \(200\,V\)
4 \(10\,V\)
PHXII07:ALTERNATING CURRENT

356254 An alternating emf of 0.2\(V\) is applied across an \(LCR\) series circuit having \(R = 4\Omega ,C = 80\mu F\) and \(L = 200mH\). At resonance the voltage drop across the inductor is

1 \(10V\)
2 \(2.5\,V\)
3 \(1\,V\)
4 \(5V\)
PHXII07:ALTERNATING CURRENT

356255 In \(L-C-R\) resonant circuit, what is the phase angle \(\phi\) ?

1 \(90^{\circ}\)
2 \(180^{\circ}\)
3 \(0^{\circ}\)
4 \(60^{\circ}\)
PHXII07:ALTERNATING CURRENT

356256 Assertion :
At resonance, \(L C R\) series circuit has a maximum current.
Reason :
At resonance, in \(L C R\) series circuit, the current and \(e.m.f\) are in phase with each other and impedance is minimum.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII07:ALTERNATING CURRENT

356253 At resonance, the voltage drop across the resistor \({R}\) is
supporting img

1 \(20\,V\)
2 \(220\,V\)
3 \(200\,V\)
4 \(10\,V\)
PHXII07:ALTERNATING CURRENT

356254 An alternating emf of 0.2\(V\) is applied across an \(LCR\) series circuit having \(R = 4\Omega ,C = 80\mu F\) and \(L = 200mH\). At resonance the voltage drop across the inductor is

1 \(10V\)
2 \(2.5\,V\)
3 \(1\,V\)
4 \(5V\)
PHXII07:ALTERNATING CURRENT

356255 In \(L-C-R\) resonant circuit, what is the phase angle \(\phi\) ?

1 \(90^{\circ}\)
2 \(180^{\circ}\)
3 \(0^{\circ}\)
4 \(60^{\circ}\)
PHXII07:ALTERNATING CURRENT

356256 Assertion :
At resonance, \(L C R\) series circuit has a maximum current.
Reason :
At resonance, in \(L C R\) series circuit, the current and \(e.m.f\) are in phase with each other and impedance is minimum.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII07:ALTERNATING CURRENT

356253 At resonance, the voltage drop across the resistor \({R}\) is
supporting img

1 \(20\,V\)
2 \(220\,V\)
3 \(200\,V\)
4 \(10\,V\)
PHXII07:ALTERNATING CURRENT

356254 An alternating emf of 0.2\(V\) is applied across an \(LCR\) series circuit having \(R = 4\Omega ,C = 80\mu F\) and \(L = 200mH\). At resonance the voltage drop across the inductor is

1 \(10V\)
2 \(2.5\,V\)
3 \(1\,V\)
4 \(5V\)
PHXII07:ALTERNATING CURRENT

356255 In \(L-C-R\) resonant circuit, what is the phase angle \(\phi\) ?

1 \(90^{\circ}\)
2 \(180^{\circ}\)
3 \(0^{\circ}\)
4 \(60^{\circ}\)
PHXII07:ALTERNATING CURRENT

356256 Assertion :
At resonance, \(L C R\) series circuit has a maximum current.
Reason :
At resonance, in \(L C R\) series circuit, the current and \(e.m.f\) are in phase with each other and impedance is minimum.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXII07:ALTERNATING CURRENT

356253 At resonance, the voltage drop across the resistor \({R}\) is
supporting img

1 \(20\,V\)
2 \(220\,V\)
3 \(200\,V\)
4 \(10\,V\)
PHXII07:ALTERNATING CURRENT

356254 An alternating emf of 0.2\(V\) is applied across an \(LCR\) series circuit having \(R = 4\Omega ,C = 80\mu F\) and \(L = 200mH\). At resonance the voltage drop across the inductor is

1 \(10V\)
2 \(2.5\,V\)
3 \(1\,V\)
4 \(5V\)
PHXII07:ALTERNATING CURRENT

356255 In \(L-C-R\) resonant circuit, what is the phase angle \(\phi\) ?

1 \(90^{\circ}\)
2 \(180^{\circ}\)
3 \(0^{\circ}\)
4 \(60^{\circ}\)
PHXII07:ALTERNATING CURRENT

356256 Assertion :
At resonance, \(L C R\) series circuit has a maximum current.
Reason :
At resonance, in \(L C R\) series circuit, the current and \(e.m.f\) are in phase with each other and impedance is minimum.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.