# Electromagnetic Induction & Alternating Currents-LCR Series Circuit (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 6 - 8 of 18

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## Question number: 6

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

### Question

In the circuit shown in figure neglecting source resistance the voltmeter and ammeter reading will respectively, be

### Choices

Choice (4) Response

a.

0V, 8A

b.

0V, 3A

c.

150 V, 6A

d.

150V, 3A

## Question number: 7

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

### Question

For the series LCR circuit shown in the figure, what is the resonance frequency and the amplitude of the current at the resonating frequency

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 8

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

### Question

An alternating emf of frequency is applied to a series LCR circuit. For this frequency of the applied emf is,

### Choices

Choice (4) Response

a.

The circuit is at resonance and its impedance is made up only of a reactive part.

b.

The current in the circuit is not in phase with the applied e. m. f. and the voltage across R equals this applied emf

c.

The sum of the potential differences across the inductance and capacitance equals the applied e. m. f. which is 180° ahead of phase of the current in the circuit

d.

The quality factor of the circuit is or and this is a measure of the voltage magnification (produced by the circuit at resonance) as well as the sharpness of resonance of the circuit.

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