Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET Physics): Questions 1 - 5 of 25

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Question number: 1

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

Choices

Choice (4) Response

a.

45° to the direction of the field

b.

0° to the direction of the field

c.

135° to the direction of the field

d.

90° to the direction of the field

Question number: 2

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

A circular coil of radius 4 cm has 50 turns. In this coil a current of 2 A is flowing. It is placed in a magnetic field of 0.1 weber/m 2. The amount of work done in rotating it through 180° from its equilibrium position will be

Choices

Choice (4) Response

a.

0.1 J

b.

0.8 J

c.

0.4 J

d.

0.2 J

Question number: 3

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

A thin circular wire carrying a current I has a magnetic moment M. The shape of the wire is changed to a square and it carries the same current. It will have a magnetic moment

Choices

Choice (4) Response

a.

4πM

b.

π4M

c.

4π2M

d.

M

Passage

Read the passage given below and answer the questions that follow:

A conducting wire is bent into a loop as shown in the figure. The segment AOB is parabolic given by the equation y 2 = 2x while segment BA is a straight line parallel to the y-axis.

The magnetic field in the region is B and the current in the wire is 2A.

Electric current carrying loop segment AOB

Electric Current Carrying Loop Segment AOB

A conducting wire is bent into a loop as shown in figure. The segment AOB is parabolic and BA is straight line parallel to y-axis.

Question number: 4 (1 of 1 Based on Passage) Show Passage

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

The torque on the loop will be

Choices

Choice (4) Response

a.

162Nm

b.

182Nm

c.

16 Nm

d.

Zero

Question number: 5

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

MCQ▾

Question

The magnetic moment of a current carrying circular coil is

Choices

Choice (4) Response

a.

Directly proportional to the square of the length of the wire

b.

Directly proportional to the length of the wire

c.

Inversely proportional to the length of the wire

d.

Inversely proportional to the square of the length of the wire

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