Electromagnetic Induction & Alternating Currents (NEET Physics): Questions 95 - 99 of 121

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Question number: 95

» Electromagnetic Induction & Alternating Currents » Power in AC Circuits

MCQ▾

Question

In an ac circuit, V and I are given by V=100sin(100t)volt ,

I=sin(100t+π3)mA . The average power dissipated in circuit is

Choices

Choice (4) Response
a.

2.5 watt

b.

10 4 watt

c.

10 watt

d.

0.025 watt

Question number: 96

» Electromagnetic Induction & Alternating Currents » Resonance

MCQ▾

Question

This circuit will resonate at ω equal to,

In given figure is LCR circuit diagram

In Given Figure Is LCR Circuit Diagram

In figure inductor, capacitor and resistor connected in parallel with 200 V power supply.

Choices

Choice (4) Response
a.

200 rad s -1

b.

2000 rad s -1

c.

50 rad s -1

d.

500 rad s -1

Question number: 97

» Electromagnetic Induction & Alternating Currents » Quality Factor

MCQ▾

Question

In an LCR circuit, the sharpness of resonance depends on

Choices

Choice (4) Response
a.

Capacitance C

b.

Inductance L

c.

Resistance R

d. All a. , b. and c. are correct

Question number: 98

» 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

Circuit Diagram of LCR

Circuit Diagram of LCR

LCR circuit diagram represent in the figure. Volt meter connected across the series connection of inductor and capacitor and ammeter measured current of circuit.

Choices

Choice (4) Response
a.

0V, 8A

b.

0V, 3A

c.

150 V, 6A

d.

150V, 3A

Question number: 99

» 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

LCR circuit diagram

LCR Circuit Diagram

In figure L = 8 mH, C = 20 µF and R = 44 Ω are connected in series with 220 V ac supply.

Choices

Choice (4) Response
a.

2500radS1and52A

b.

2500radS1and52A

c.

2500radS1and5A

d.

25radS1and52A

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