Alternating Voltage Across Different Elements
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PHXII07:ALTERNATING CURRENT

356006 An alternating current of frequency \('f'\) is flowing in a circuit containing a resistance \(R\) and a choke \(L\) in series. The impedance of this circuit is

1 \(\sqrt {{R^2} + 4{\pi ^2}{f^2}{L^2}} \)
2 \(R + 2\pi fL\)
3 \(\sqrt {{R^2} + 2\pi fL} \)
4 \(\sqrt {{R^2} + {L^2}} \)
PHXII07:ALTERNATING CURRENT

356007 An inductor of inductance \(L\) and resistor \(R\) are joined together in series and connected by a source of frequency \(\omega \). The power dissipated in the circuit is

1 \(\frac{V}{{{R^2}{\omega ^2}{L^2}}}\)
2 \(\frac{{{R^2} + {\omega ^2}{L^2}}}{V}\)
3 \(\frac{{{V^2}R}}{{\sqrt {{R^2} + {\omega ^2}{L^2}} }}\)
4 \(\frac{{{V^2}R}}{{{R^2} + {\omega ^2}{L^2}}}\)
KCET - 2019
PHXII07:ALTERNATING CURRENT

356008 In the circuit shown, a \(30\,V\) d.c. source gives a current \(2.0\,A\) as recorded in the ammeter \(A\) and \(30\,V\) a.c. source of frequency gives a current \(1.2\,V\). The inductive reactance is (in \(ohms\))
supporting img

1 30
2 20
3 \(5 \sqrt{34}\)
4 40
PHXII07:ALTERNATING CURRENT

356009 The current in the shown circuit is found to be \(4\sin \left( {314t - \frac{\pi }{4}} \right)\,A\). Find the value of inductance.
supporting img

1 \({1 H}\)
2 \({2 H}\)
3 \({3 H}\)
4 \({4 H}\)
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PHXII07:ALTERNATING CURRENT

356006 An alternating current of frequency \('f'\) is flowing in a circuit containing a resistance \(R\) and a choke \(L\) in series. The impedance of this circuit is

1 \(\sqrt {{R^2} + 4{\pi ^2}{f^2}{L^2}} \)
2 \(R + 2\pi fL\)
3 \(\sqrt {{R^2} + 2\pi fL} \)
4 \(\sqrt {{R^2} + {L^2}} \)
PHXII07:ALTERNATING CURRENT

356007 An inductor of inductance \(L\) and resistor \(R\) are joined together in series and connected by a source of frequency \(\omega \). The power dissipated in the circuit is

1 \(\frac{V}{{{R^2}{\omega ^2}{L^2}}}\)
2 \(\frac{{{R^2} + {\omega ^2}{L^2}}}{V}\)
3 \(\frac{{{V^2}R}}{{\sqrt {{R^2} + {\omega ^2}{L^2}} }}\)
4 \(\frac{{{V^2}R}}{{{R^2} + {\omega ^2}{L^2}}}\)
KCET - 2019
PHXII07:ALTERNATING CURRENT

356008 In the circuit shown, a \(30\,V\) d.c. source gives a current \(2.0\,A\) as recorded in the ammeter \(A\) and \(30\,V\) a.c. source of frequency gives a current \(1.2\,V\). The inductive reactance is (in \(ohms\))
supporting img

1 30
2 20
3 \(5 \sqrt{34}\)
4 40
PHXII07:ALTERNATING CURRENT

356009 The current in the shown circuit is found to be \(4\sin \left( {314t - \frac{\pi }{4}} \right)\,A\). Find the value of inductance.
supporting img

1 \({1 H}\)
2 \({2 H}\)
3 \({3 H}\)
4 \({4 H}\)
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PHXII07:ALTERNATING CURRENT

356006 An alternating current of frequency \('f'\) is flowing in a circuit containing a resistance \(R\) and a choke \(L\) in series. The impedance of this circuit is

1 \(\sqrt {{R^2} + 4{\pi ^2}{f^2}{L^2}} \)
2 \(R + 2\pi fL\)
3 \(\sqrt {{R^2} + 2\pi fL} \)
4 \(\sqrt {{R^2} + {L^2}} \)
PHXII07:ALTERNATING CURRENT

356007 An inductor of inductance \(L\) and resistor \(R\) are joined together in series and connected by a source of frequency \(\omega \). The power dissipated in the circuit is

1 \(\frac{V}{{{R^2}{\omega ^2}{L^2}}}\)
2 \(\frac{{{R^2} + {\omega ^2}{L^2}}}{V}\)
3 \(\frac{{{V^2}R}}{{\sqrt {{R^2} + {\omega ^2}{L^2}} }}\)
4 \(\frac{{{V^2}R}}{{{R^2} + {\omega ^2}{L^2}}}\)
KCET - 2019
PHXII07:ALTERNATING CURRENT

356008 In the circuit shown, a \(30\,V\) d.c. source gives a current \(2.0\,A\) as recorded in the ammeter \(A\) and \(30\,V\) a.c. source of frequency gives a current \(1.2\,V\). The inductive reactance is (in \(ohms\))
supporting img

1 30
2 20
3 \(5 \sqrt{34}\)
4 40
PHXII07:ALTERNATING CURRENT

356009 The current in the shown circuit is found to be \(4\sin \left( {314t - \frac{\pi }{4}} \right)\,A\). Find the value of inductance.
supporting img

1 \({1 H}\)
2 \({2 H}\)
3 \({3 H}\)
4 \({4 H}\)
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII07:ALTERNATING CURRENT

356006 An alternating current of frequency \('f'\) is flowing in a circuit containing a resistance \(R\) and a choke \(L\) in series. The impedance of this circuit is

1 \(\sqrt {{R^2} + 4{\pi ^2}{f^2}{L^2}} \)
2 \(R + 2\pi fL\)
3 \(\sqrt {{R^2} + 2\pi fL} \)
4 \(\sqrt {{R^2} + {L^2}} \)
PHXII07:ALTERNATING CURRENT

356007 An inductor of inductance \(L\) and resistor \(R\) are joined together in series and connected by a source of frequency \(\omega \). The power dissipated in the circuit is

1 \(\frac{V}{{{R^2}{\omega ^2}{L^2}}}\)
2 \(\frac{{{R^2} + {\omega ^2}{L^2}}}{V}\)
3 \(\frac{{{V^2}R}}{{\sqrt {{R^2} + {\omega ^2}{L^2}} }}\)
4 \(\frac{{{V^2}R}}{{{R^2} + {\omega ^2}{L^2}}}\)
KCET - 2019
PHXII07:ALTERNATING CURRENT

356008 In the circuit shown, a \(30\,V\) d.c. source gives a current \(2.0\,A\) as recorded in the ammeter \(A\) and \(30\,V\) a.c. source of frequency gives a current \(1.2\,V\). The inductive reactance is (in \(ohms\))
supporting img

1 30
2 20
3 \(5 \sqrt{34}\)
4 40
PHXII07:ALTERNATING CURRENT

356009 The current in the shown circuit is found to be \(4\sin \left( {314t - \frac{\pi }{4}} \right)\,A\). Find the value of inductance.
supporting img

1 \({1 H}\)
2 \({2 H}\)
3 \({3 H}\)
4 \({4 H}\)