NEET Physics: Questions 541 - 544 of 2099

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Question number: 541

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

A 30 cm long bar magnet is placed in the magnetic meridian with its north pole pointing south. The neutral point is obtained at a distance of 40 cm from the center of the magnet. Pole strength of the magnet is (The. horizontal component of earth’s magnetic field is 0.34 Gauss)

Choices

Choice (4) Response
a.

12.7 Am

b.

16.7 Am

c.

26.7 Am

d.

15.2 Am

Question number: 542

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

At magnetic equator of earth, angle of dip is

Choices

Choice (4) Response
a.

45°

b.

Zero

c.

180°

d.

90°

Question number: 543

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

MCQ▾

Question

For the arrangement of two current carrying identical coils shown in the figure, the magnetic field at the center O is (N and a represent number of turns and radius of each coil) -

Current carrying identical coils

Current Carrying Identical Coils

In figure two current carrying identical coils arranged perpendicularly to each other. O is the center of these coils.

Choices

Choice (4) Response
a.

μ0NI2a

b.

μ0NI2

c.

μ0NI2a

d.

μ0NI22a

Question number: 544

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

MCQ▾

Question

A square loop of side a is rotating about its diagonal with angular velocity ω in a perpendicular magnetic field as shown in the figure. If the number of turns in it is 10 then the magnetic flux linked with the loop at any instant will be-

A square loop of side a in magnetic field

A Square Loop of Side a in Magnetic Field

In figure, a square loop of side a is rotating about its diagonal with angular velocity ω in a perpendicular magnetic field.

Choices

Choice (4) Response
a.

10Ba 2

b.

10Ba

c.

10Ba 2 cos (ωt)

d.

20Ba 2

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