Electromagnetic Induction & Alternating Currents (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 101 - 105 of 124

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Question number: 101

» Electromagnetic Induction & Alternating Currents » Resonance

MCQ▾

Question

The resonant frequency of a circuit is f. If the capacitance is made 4 times the initial values, then the resonance frequency will become

Choices

Choice (4) Response

a.

b.

f

c.

174

d.

Both a. and c. are correct

Question number: 102

» Electromagnetic Induction & Alternating Currents » Power in AC Circuits

MCQ▾

Question

If a current I given by flows in an ac circuit across which an ac potential of has been applied, then the average power consumption P in the circuit will be

Choices

Choice (4) Response

a.

b.

c.

d.

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.

b.

c.

d.

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.

b.

c.

d.

f Page
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