NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 667 - 671 of 2320

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Passage

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

A current carrying wire at side of cube

A Current Carrying Wire at Side of Cube

A wire carrying a 10 A current is bent to pass through sides of a cube of side 10 cm as shown in figure. A magnetic field T is present in the region. Then, find

Question number: 667 (3 of 3 Based on Passage) Show Passage

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

Edit
MCQ▾

Question

The net torque on the loop is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 668

» Magnetic Effects of Current and Magnetism » Bar Magnet

Edit
MCQ▾

Question

A 10 cm long bar magnet of magnetic moment 1.34 Am 2 is placed in the magnetic meridian with its south pole pointing geographical south. The neutral point is obtained at a distance of 15 cm from the center of the magnet. Calculate the horizontal component of earth’s magnetic field.

Choices

Choice (4)Response

a.

0.21 x 10 -4 T

b.

0.12 x 10 -4 T

c.

0.87 x 10 -7 T

d.

0.34 x 10 -4 T

Question number: 669

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

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MCQ▾

Question

Liquid oxygen remains suspended between two pole faces of a magnet because it is

Choices

Choice (4)Response

a.

Ferromagnetic

b.

Diamagnetic

c.

Antiferromagnetic

d.

Paramagnetic

Question number: 670

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

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

Torque on the coil is maximum, when coil is suspended in a radial magnetic field.

Reason (Ꭱ)

The torque tends to rotate the coil on its own axis.

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

Question number: 671

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

Edit
MCQ▾

Question

A rectangular loop carrying a current i is placed in a uniform magnetic field B, The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by

Choices

Choice (4)Response

a.

b.

c.

d.

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