01. A.C. Voltage Applied to Inductance & Capacitor
Alternating Current

155077 In which of the following circuit is the current maximum just after the switch $S$ is closed?

1 (i)
2 (ii)
3 (iii)
4 Both (ii) and (iii)
Alternating Current

155078 A circuit draws $330 \mathrm{~W}$ from a $110 \mathrm{~V}, 60 \mathrm{~Hz} \mathrm{AC}$ line. The power factor is 0.6 and the current lags the voltage. The capacitance of a series capacitor that will result in a power factor of unity is equal to :

1 $31 \mu \mathrm{F}$
2 $54 \mu \mathrm{F}$
3 $151 \mu \mathrm{F}$
4 $201 \mu \mathrm{F}$
Alternating Current

155079 An inductive coil has a resistance of $100 \Omega$. When an $\mathrm{AC}$ signal of frequency $1000 \mathrm{~Hz}$ is applied to the coil, the voltage leads the current by $45^{\circ}$. The inductance of the coil is-

1 $\frac{1}{10 \pi}$
2 $\frac{1}{20 \pi}$
3 $\frac{1}{40 \pi}$
4 $\frac{1}{60 \pi}$
Alternating Current

155081 An inductive circuit contains a resistance of $10 \Omega$ and an inductance of $2.0 \mathrm{H}$. If an $\mathrm{AC}$ voltage of $120 \mathrm{~V}$ and frequency of $60 \mathrm{~Hz}$ is applied to this circuit, the current in the circuit would be nearly

1 $0.32 \mathrm{~A}$
2 $0.16 \mathrm{~A}$
3 $0.43 \mathrm{~A}$
4 $0.80 \mathrm{~A}$
Alternating Current

155085 When $100 \mathrm{~V}$ d.c. is applied across a coil, a current of 1 amp flows through it. When $100 \mathrm{~V}$ a.c. of $50 \mathrm{~Hz}$ is applied to the same coil only 0.5 A flows. The inductance of the coil is :

1 $5.5 \mathrm{mH}$
2 $0.55 \mathrm{mH}$
3 $55 \mathrm{mH}$
4 $0.55 \mathrm{H}$
Alternating Current

155077 In which of the following circuit is the current maximum just after the switch $S$ is closed?

1 (i)
2 (ii)
3 (iii)
4 Both (ii) and (iii)
Alternating Current

155078 A circuit draws $330 \mathrm{~W}$ from a $110 \mathrm{~V}, 60 \mathrm{~Hz} \mathrm{AC}$ line. The power factor is 0.6 and the current lags the voltage. The capacitance of a series capacitor that will result in a power factor of unity is equal to :

1 $31 \mu \mathrm{F}$
2 $54 \mu \mathrm{F}$
3 $151 \mu \mathrm{F}$
4 $201 \mu \mathrm{F}$
Alternating Current

155079 An inductive coil has a resistance of $100 \Omega$. When an $\mathrm{AC}$ signal of frequency $1000 \mathrm{~Hz}$ is applied to the coil, the voltage leads the current by $45^{\circ}$. The inductance of the coil is-

1 $\frac{1}{10 \pi}$
2 $\frac{1}{20 \pi}$
3 $\frac{1}{40 \pi}$
4 $\frac{1}{60 \pi}$
Alternating Current

155081 An inductive circuit contains a resistance of $10 \Omega$ and an inductance of $2.0 \mathrm{H}$. If an $\mathrm{AC}$ voltage of $120 \mathrm{~V}$ and frequency of $60 \mathrm{~Hz}$ is applied to this circuit, the current in the circuit would be nearly

1 $0.32 \mathrm{~A}$
2 $0.16 \mathrm{~A}$
3 $0.43 \mathrm{~A}$
4 $0.80 \mathrm{~A}$
Alternating Current

155085 When $100 \mathrm{~V}$ d.c. is applied across a coil, a current of 1 amp flows through it. When $100 \mathrm{~V}$ a.c. of $50 \mathrm{~Hz}$ is applied to the same coil only 0.5 A flows. The inductance of the coil is :

1 $5.5 \mathrm{mH}$
2 $0.55 \mathrm{mH}$
3 $55 \mathrm{mH}$
4 $0.55 \mathrm{H}$
Alternating Current

155077 In which of the following circuit is the current maximum just after the switch $S$ is closed?

1 (i)
2 (ii)
3 (iii)
4 Both (ii) and (iii)
Alternating Current

155078 A circuit draws $330 \mathrm{~W}$ from a $110 \mathrm{~V}, 60 \mathrm{~Hz} \mathrm{AC}$ line. The power factor is 0.6 and the current lags the voltage. The capacitance of a series capacitor that will result in a power factor of unity is equal to :

1 $31 \mu \mathrm{F}$
2 $54 \mu \mathrm{F}$
3 $151 \mu \mathrm{F}$
4 $201 \mu \mathrm{F}$
Alternating Current

155079 An inductive coil has a resistance of $100 \Omega$. When an $\mathrm{AC}$ signal of frequency $1000 \mathrm{~Hz}$ is applied to the coil, the voltage leads the current by $45^{\circ}$. The inductance of the coil is-

1 $\frac{1}{10 \pi}$
2 $\frac{1}{20 \pi}$
3 $\frac{1}{40 \pi}$
4 $\frac{1}{60 \pi}$
Alternating Current

155081 An inductive circuit contains a resistance of $10 \Omega$ and an inductance of $2.0 \mathrm{H}$. If an $\mathrm{AC}$ voltage of $120 \mathrm{~V}$ and frequency of $60 \mathrm{~Hz}$ is applied to this circuit, the current in the circuit would be nearly

1 $0.32 \mathrm{~A}$
2 $0.16 \mathrm{~A}$
3 $0.43 \mathrm{~A}$
4 $0.80 \mathrm{~A}$
Alternating Current

155085 When $100 \mathrm{~V}$ d.c. is applied across a coil, a current of 1 amp flows through it. When $100 \mathrm{~V}$ a.c. of $50 \mathrm{~Hz}$ is applied to the same coil only 0.5 A flows. The inductance of the coil is :

1 $5.5 \mathrm{mH}$
2 $0.55 \mathrm{mH}$
3 $55 \mathrm{mH}$
4 $0.55 \mathrm{H}$
Alternating Current

155077 In which of the following circuit is the current maximum just after the switch $S$ is closed?

1 (i)
2 (ii)
3 (iii)
4 Both (ii) and (iii)
Alternating Current

155078 A circuit draws $330 \mathrm{~W}$ from a $110 \mathrm{~V}, 60 \mathrm{~Hz} \mathrm{AC}$ line. The power factor is 0.6 and the current lags the voltage. The capacitance of a series capacitor that will result in a power factor of unity is equal to :

1 $31 \mu \mathrm{F}$
2 $54 \mu \mathrm{F}$
3 $151 \mu \mathrm{F}$
4 $201 \mu \mathrm{F}$
Alternating Current

155079 An inductive coil has a resistance of $100 \Omega$. When an $\mathrm{AC}$ signal of frequency $1000 \mathrm{~Hz}$ is applied to the coil, the voltage leads the current by $45^{\circ}$. The inductance of the coil is-

1 $\frac{1}{10 \pi}$
2 $\frac{1}{20 \pi}$
3 $\frac{1}{40 \pi}$
4 $\frac{1}{60 \pi}$
Alternating Current

155081 An inductive circuit contains a resistance of $10 \Omega$ and an inductance of $2.0 \mathrm{H}$. If an $\mathrm{AC}$ voltage of $120 \mathrm{~V}$ and frequency of $60 \mathrm{~Hz}$ is applied to this circuit, the current in the circuit would be nearly

1 $0.32 \mathrm{~A}$
2 $0.16 \mathrm{~A}$
3 $0.43 \mathrm{~A}$
4 $0.80 \mathrm{~A}$
Alternating Current

155085 When $100 \mathrm{~V}$ d.c. is applied across a coil, a current of 1 amp flows through it. When $100 \mathrm{~V}$ a.c. of $50 \mathrm{~Hz}$ is applied to the same coil only 0.5 A flows. The inductance of the coil is :

1 $5.5 \mathrm{mH}$
2 $0.55 \mathrm{mH}$
3 $55 \mathrm{mH}$
4 $0.55 \mathrm{H}$
Alternating Current

155077 In which of the following circuit is the current maximum just after the switch $S$ is closed?

1 (i)
2 (ii)
3 (iii)
4 Both (ii) and (iii)
Alternating Current

155078 A circuit draws $330 \mathrm{~W}$ from a $110 \mathrm{~V}, 60 \mathrm{~Hz} \mathrm{AC}$ line. The power factor is 0.6 and the current lags the voltage. The capacitance of a series capacitor that will result in a power factor of unity is equal to :

1 $31 \mu \mathrm{F}$
2 $54 \mu \mathrm{F}$
3 $151 \mu \mathrm{F}$
4 $201 \mu \mathrm{F}$
Alternating Current

155079 An inductive coil has a resistance of $100 \Omega$. When an $\mathrm{AC}$ signal of frequency $1000 \mathrm{~Hz}$ is applied to the coil, the voltage leads the current by $45^{\circ}$. The inductance of the coil is-

1 $\frac{1}{10 \pi}$
2 $\frac{1}{20 \pi}$
3 $\frac{1}{40 \pi}$
4 $\frac{1}{60 \pi}$
Alternating Current

155081 An inductive circuit contains a resistance of $10 \Omega$ and an inductance of $2.0 \mathrm{H}$. If an $\mathrm{AC}$ voltage of $120 \mathrm{~V}$ and frequency of $60 \mathrm{~Hz}$ is applied to this circuit, the current in the circuit would be nearly

1 $0.32 \mathrm{~A}$
2 $0.16 \mathrm{~A}$
3 $0.43 \mathrm{~A}$
4 $0.80 \mathrm{~A}$
Alternating Current

155085 When $100 \mathrm{~V}$ d.c. is applied across a coil, a current of 1 amp flows through it. When $100 \mathrm{~V}$ a.c. of $50 \mathrm{~Hz}$ is applied to the same coil only 0.5 A flows. The inductance of the coil is :

1 $5.5 \mathrm{mH}$
2 $0.55 \mathrm{mH}$
3 $55 \mathrm{mH}$
4 $0.55 \mathrm{H}$