Alternating Voltage Across Different Elements
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NEET DIGITAL LIBRARY
PHXII07:ALTERNATING CURRENT

356040 In a black box of unknown elements ( \(L, C\) or \(R\) or any other combination) an \(A C\) voltage \(E=E_{0} \sin (\omega t+\phi)\) is applied and current in the circuit was found to be \(i=i_{0} \sin (\omega t+\phi+\pi / 4)\). Then the unknown elements in the box may be
supporting img

1 Only capacitor
2 Inductor and resistor both
3 Either capacitor, resistor and inductor or only capacitor and resistor
4 Only resistor
PHXII07:ALTERNATING CURRENT

355856 The \(L - C\) parallel resonant circuit

1 Has a very high impedance
2 Has a very high current
3 Acts as resistance of very low value
4 Has zero impedance
MHTCET - 2016
PHXII07:ALTERNATING CURRENT

355857 Two identical incandescent light bulbs are connected as shown in figure. When the circuit is an AC voltage source of frequency \(f\), which of the following observations will be correct
supporting img

1 Bulb \(b_{1}\) will blink and bulb \(b_{2}\) will be ON constantly
2 Bulb \(b_{1}\) will light up initially and goes off, bulb \(b_{2}\) will be ON constantly
3 Both bulbs will glow alternatively
4 Both bulbs will glow with same brightness provided \(f=\dfrac{1}{2 \pi} \sqrt{(1 / L C)}\)
PHXII07:ALTERNATING CURRENT

355858 An inductor \(L\) and a capacitor \(C\) are connected in the circuit as shown in the figure. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero ampere?
supporting img

1 \({A_3}\)
2 \({A_1}\)
3 \({A_2}\)
4 None of these
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PHXII07:ALTERNATING CURRENT

356040 In a black box of unknown elements ( \(L, C\) or \(R\) or any other combination) an \(A C\) voltage \(E=E_{0} \sin (\omega t+\phi)\) is applied and current in the circuit was found to be \(i=i_{0} \sin (\omega t+\phi+\pi / 4)\). Then the unknown elements in the box may be
supporting img

1 Only capacitor
2 Inductor and resistor both
3 Either capacitor, resistor and inductor or only capacitor and resistor
4 Only resistor
PHXII07:ALTERNATING CURRENT

355856 The \(L - C\) parallel resonant circuit

1 Has a very high impedance
2 Has a very high current
3 Acts as resistance of very low value
4 Has zero impedance
MHTCET - 2016
PHXII07:ALTERNATING CURRENT

355857 Two identical incandescent light bulbs are connected as shown in figure. When the circuit is an AC voltage source of frequency \(f\), which of the following observations will be correct
supporting img

1 Bulb \(b_{1}\) will blink and bulb \(b_{2}\) will be ON constantly
2 Bulb \(b_{1}\) will light up initially and goes off, bulb \(b_{2}\) will be ON constantly
3 Both bulbs will glow alternatively
4 Both bulbs will glow with same brightness provided \(f=\dfrac{1}{2 \pi} \sqrt{(1 / L C)}\)
PHXII07:ALTERNATING CURRENT

355858 An inductor \(L\) and a capacitor \(C\) are connected in the circuit as shown in the figure. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero ampere?
supporting img

1 \({A_3}\)
2 \({A_1}\)
3 \({A_2}\)
4 None of these
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PHXII07:ALTERNATING CURRENT

356040 In a black box of unknown elements ( \(L, C\) or \(R\) or any other combination) an \(A C\) voltage \(E=E_{0} \sin (\omega t+\phi)\) is applied and current in the circuit was found to be \(i=i_{0} \sin (\omega t+\phi+\pi / 4)\). Then the unknown elements in the box may be
supporting img

1 Only capacitor
2 Inductor and resistor both
3 Either capacitor, resistor and inductor or only capacitor and resistor
4 Only resistor
PHXII07:ALTERNATING CURRENT

355856 The \(L - C\) parallel resonant circuit

1 Has a very high impedance
2 Has a very high current
3 Acts as resistance of very low value
4 Has zero impedance
MHTCET - 2016
PHXII07:ALTERNATING CURRENT

355857 Two identical incandescent light bulbs are connected as shown in figure. When the circuit is an AC voltage source of frequency \(f\), which of the following observations will be correct
supporting img

1 Bulb \(b_{1}\) will blink and bulb \(b_{2}\) will be ON constantly
2 Bulb \(b_{1}\) will light up initially and goes off, bulb \(b_{2}\) will be ON constantly
3 Both bulbs will glow alternatively
4 Both bulbs will glow with same brightness provided \(f=\dfrac{1}{2 \pi} \sqrt{(1 / L C)}\)
PHXII07:ALTERNATING CURRENT

355858 An inductor \(L\) and a capacitor \(C\) are connected in the circuit as shown in the figure. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero ampere?
supporting img

1 \({A_3}\)
2 \({A_1}\)
3 \({A_2}\)
4 None of these
NEET DIGITAL LIBRARY
PHXII07:ALTERNATING CURRENT

356040 In a black box of unknown elements ( \(L, C\) or \(R\) or any other combination) an \(A C\) voltage \(E=E_{0} \sin (\omega t+\phi)\) is applied and current in the circuit was found to be \(i=i_{0} \sin (\omega t+\phi+\pi / 4)\). Then the unknown elements in the box may be
supporting img

1 Only capacitor
2 Inductor and resistor both
3 Either capacitor, resistor and inductor or only capacitor and resistor
4 Only resistor
PHXII07:ALTERNATING CURRENT

355856 The \(L - C\) parallel resonant circuit

1 Has a very high impedance
2 Has a very high current
3 Acts as resistance of very low value
4 Has zero impedance
MHTCET - 2016
PHXII07:ALTERNATING CURRENT

355857 Two identical incandescent light bulbs are connected as shown in figure. When the circuit is an AC voltage source of frequency \(f\), which of the following observations will be correct
supporting img

1 Bulb \(b_{1}\) will blink and bulb \(b_{2}\) will be ON constantly
2 Bulb \(b_{1}\) will light up initially and goes off, bulb \(b_{2}\) will be ON constantly
3 Both bulbs will glow alternatively
4 Both bulbs will glow with same brightness provided \(f=\dfrac{1}{2 \pi} \sqrt{(1 / L C)}\)
PHXII07:ALTERNATING CURRENT

355858 An inductor \(L\) and a capacitor \(C\) are connected in the circuit as shown in the figure. The frequency of the power supply is equal to the resonant frequency of the circuit. Which ammeter will read zero ampere?
supporting img

1 \({A_3}\)
2 \({A_1}\)
3 \({A_2}\)
4 None of these
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