Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 9

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Refer to the series $L C R AC$ circuit. Find the value of $V_{3} .$

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Important Questions on Alternating Current

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 10

An alternating current of

1.5 mA

with angular frequency

100 rad s^{- 1}

flows through a

10 kΩ

resistor and a

00.50 μ F

capacitor in series. The rms potential drop across the capacitor is

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 11

An AC source of frequency

ω

when fed into a

R C

series circuit, current is recorded to be

I .

If now frequency is changed to

\frac{ω}{4}

(keeping voltage same)

,

the current is found to

\frac{1}{2}

.

The ratio of reactance to resistance at original frequency

ω

is

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 12

In a series

L C R

circuit, the total reactance is

4 Ω

and resistance is

3 Ω

.

Its power factor is

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 13

The inductance of a coil in which a current $0.1 A$ is increasing at the rate of $0.5 A s^{- 1}$ represents a power flow of $\frac{1}{2}$ watt is

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 14

Switch is in position $A$ for long time $.$ At time $t = 0$ it is shifted to position $B$ $.$ Find the maximum charge that will accumulate on capacitor $.$

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 15

In the $L C$ circuit, at this time

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 16

An

L C

series circuit has an oscillation frequency

f .

Two isolated inductors, each with inductance

L

and two capacitors each with capacitance

C

.

all are connected in series and circuit is completed. The oscillation frequency is

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Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 17

In an $L C$ circuit shown in figure, if the switch is closed at $t = 0$ , find the equation for instantaneous current in $mA . Q_{\max} = 100 μ C, L = 40 mH, C = 100 μ F$

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