# Electromagnetic Induction & Alternating Currents (AIIMS (All India Institute of Medical Sciences) Physics): Questions 38 - 43 of 51

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 500 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

## Question number: 38

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

MCQ▾

### Question

A conducting ring of radius 1 meter is placed in a uniform magnetic field B of 0.02 T, oscillating with frequency 150 Hz with its plane at right angles to magnetic field. What will be the induced electric field?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 39

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

### Question

The of mutual inductance of two coils when magnetic flux changes by and current changes by 0.02 A is –

### Choices

Choice (4) Response

a.

6 H

b.

12 H

c.

9 H

d.

3 H

## Question number: 40

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

### Question

The of mutual inductance of two coils when magnetic flux changes by and current changes by 0.08 A is –

### Choices

Choice (4) Response

a.

2 H

b.

0.5 H

c.

0.4 H

d.

1 H

## Question number: 41

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

### Question

The reactance of an inductance of 0.07 H is . Than the frequency of a. c is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 42

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Appeared in Year: 2006

MCQ▾

### Question

A coil of inductive reactance has a resistance of . It is placed in series with a condenser of capacitative reactance . The combination is connected to an a. c. source of 110 volt. The power factor of the circuit is – (AIPMT)

### Choices

Choice (4) Response

a.

b.

0.80

c.

0.64

d.

0.33

## Question number: 43

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

### Question

A choke coil consists of 150 turns wound on a high permeability core. If the relative permeability is 3540, permeability of free space is , coil length is 5 cm and cross section area is then the value of the inductance of coil is –

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page