Electromagnetic Induction & Alternating Currents-Reactance and Impedance (NEET Physics): Questions 1 - 5 of 14

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 1

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

A 120 Volt ac source is connected across a pure inductor of inductance 0.70 H. If the frequency of the ac source is 60 Hz, the current passing through the inductor is

Choices

Choice (4) Response

a.

4.55 amp

b.

3.55 amp

c.

0.355 amp

d.

0.455 amp

Question number: 2

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

In an L - R circuit, the value of L is Equation henry and the value of R is 30 ohm. If in the circuit, an alternating e. m. f. of 200 volt at 50 cycles per sec is connected, the impedance of the circuit and current will be

Choices

Choice (4) Response

a.

40.4 Ω, 5A

b.

30.7 Ω, 6.5A

c.

11.4Ω, 17.5A

d.

50 Ω, 4A

Question number: 3

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

In the circuit, E = 10 volt, R1 = 5.0 ohm, R 2 = 10 ohm and L = 5.0 henry. The current just after the switch S is pressed is.

 A diagram consists of resistors, inductor, switch and battery

a Diagram Consists of Resistors, Inductor, Switch and Battery

In figure, inductor L, and resistors R1 and R2 are connected with battery E and switch S.

Choices

Choice (4) Response

a.

3.0A

b.

5.0A

c.

2.0A

d.

6.0A

Question number: 4

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

An alternating current of frequency is flowing in a circuit containing a resistor of resistance R and a choke of inductance L in series. The impedance of this circuit is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 5

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

An inductive circuit contains resistance of 10Ω and an inductance of 20 H. If an ac voltage of 120 V and frequency 60 Hz is applied to this circuit, the current would be nearly

Choices

Choice (4) Response

a.

0.80 A

b.

0.016 A

c.

0.32 A

d.

0.48 A

f Page
Sign In