Electromagnetic Induction & Alternating Currents (NEET Physics): Questions 103 - 106 of 124

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Question number: 103

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

Question

An ac source is connected to a resistive circuits. Which of the following statements are false?

(1) Current leads-the voltage

(2) Current lags behind the voltage

(3) Any of (1) or (2) may be true depending upon the value of resistance

(4) Current and voltage are in same phase

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

Question number: 104

» Electromagnetic Induction & Alternating Currents » Power in AC Circuits

MCQ▾

Question

An alternating e. m. f. of angular frequency is applied across an inductance. The instantaneous power developed in the circuit has an angular frequency

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 105

» Electromagnetic Induction & Alternating Currents » Power in AC Circuits

MCQ▾

Question

An ac supply gives 30 V, rms which passes through a 10 Ω resistance. The power dissipated in it is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 106

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

Question

An alternating current source of frequency 100 Hz is joined to a combination of a resistance, a capacitance and a inductance in series. The potential difference across the inductance, the resistance and the capacitor is 46, 8 and 40 volt respectively. The electromotive force of alternating current source in volt is

Choices

Choice (4) Response

a.

94

b.

14

c.

76

d.

10

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