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

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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.

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