# Electromagnetic Induction & Alternating Currents-Reactance and Impedance (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 5 of 14

Access detailed explanations (illustrated with images and videos) to 2320 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time!

View Sample Explanation or View Features.

Rs. 600.00 or

How to register?

## Question number: 1

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Edit
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.

0.455 amp

c.

3.55 amp

d.

0.355 amp

## Question number: 2

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Edit
MCQ▾

### Question

In an L - R circuit, the value of L is 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.

50 Ω, 4A

d.

11.4Ω, 17.5A

## Question number: 3

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Edit
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.

### Choices

Choice (4)Response

a.

2.0A

b.

6.0A

c.

5.0A

d.

3.0A

## Question number: 4

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Edit
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.

b.

c.

d.

## Question number: 5

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Edit
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.

0.48 A

b.

0.32 A

c.

0.80 A

d.

0.016 A

Developed by: