An alternating voltage (in volts) given by \(V=200\sqrt{2}sin100t\) is connected to a 1 μF capacitor through an ac ammeter. The reading of the ammeter will be:

1. 10 mA

2. 20 mA

3. 40 mA

4. 80 mA

Subtopic:  Different Types of AC Circuits |
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In the circuit shown below, what will be the readings of the voltmeter and ammeter?
           

1. 800 V, 2 A

2. 300 V, 2 A

3. 220 V, 2.2 A

4. 100 V, 2 A

Subtopic:  Different Types of AC Circuits |
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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 will be:

1. R + 2πfL

2. R2+4π2f2L2

3. R2+L2

4. R2+2πfL

Subtopic:  Different Types of AC Circuits |
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In an LCR circuit, the potential difference between the terminals of the inductance is 60 V, between the terminals of the capacitor is 30 V and that between the terminals of the resistance is 40 V. The supply voltage will be equal to:

1. 50 V

2. 70 V

3. 130 V

4. 10 V

Subtopic:  Different Types of AC Circuits |
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In a series RLC circuit, potential differences across R, L and C are 30 V, 60 V and 100 V respectively, as shown in the figure. The e.m.f. of the source (in volts) will be:

1079357

1. 190

2. 70

3. 50

4. 40

Subtopic:  Different Types of AC Circuits |
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In an LCR series network,  VL=40 V, VC=20 V and VR=15 V. The supply voltage will be:

1.  25 V

2.  75 V

3.  35 V

4.  Zero

Subtopic:  Different Types of AC Circuits |
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L, C and R represent physical quantities inductance, capacitance and resistance respectively. The combination representing the dimension of frequency will be:

1. LC

2. (LC)–1/2

3. LC1/2

4. CL

Subtopic:  Different Types of AC Circuits |
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A series AC circuit has a resistance of 4 Ω and an inductor of reactance 3 Ω. The impedance of the circuit is z1. Now when a capacitor of reactance 6 Ω is connected in series with the above combination, the impedance becomes z2. z1z2 will be:

1. 1 : 1

2. 5 : 4

3. 4 : 5

4. 2 : 1

Subtopic:  Different Types of AC Circuits |
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In the circuit shown in the figure, neglecting source resistance, the voltmeter and ammeter reading respectively will be:

   

1. 0 V, 3 A
2. 150 V, 3 A
3. 150 V, 6 A
4. 0 V, 8 A

Subtopic:  Different Types of AC Circuits |
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In a series LCR circuit, resistance R = 10 Ω and the impedance Z = 20 Ω. The phase difference between the current and the voltage will be:

1. 30°

2. 45°

3. 60°

4. 90°

Subtopic:  Different Types of AC Circuits |
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