Magnetic Effects of Current and Magnetism (BITSAT Physics): Questions 6 - 11 of 25

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Question number: 6

» Magnetic Effects of Current and Magnetism » Magnetic Moment

MCQ▾

Question

Two magnets each of magnetic moment Equation are placed so as to form a cross at right angle to each other. The magnetic moment of the system will be –

Choices

Choice (4) Response

a.

Equation

b.

M

c.

Equation

d.

0.5 M

Question number: 7

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

The direction of the null points is on the equatorial line of bar magnet, when the north pole of the magnet is pointing to –

Choices

Choice (4) Response

a.

North

b.

South

c.

West

d.

East

Question number: 8

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

MCQ▾

Question

The substances in which the magnetic moment of a single atom is not zero, is called as

Choices

Choice (4) Response

a.

Ferromagnetism

b.

Ferrimagnetism

c.

Diamagnetism

d.

Paramagnetism

Question number: 9

» Magnetic Effects of Current and Magnetism » Magnetic Moment

MCQ▾

Question

A bar magnet of magnetic moment Equation is suspended in a magnetic field of intensity Equation the couple required to deflect it through Equation is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 10

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

MCQ▾

Question

For formation of permanent magnets, the material should have –

Choices

Choice (4) Response

a.

Low coercivity

b.

High coercivity

c.

High retentivity

d.

Both b. and c. are correct

Question number: 11

» Magnetic Effects of Current and Magnetism » Earth's Magnetic Field

MCQ▾

Question

At which place, earth’s magnetism becomes horizontal?

Choices

Choice (4) Response

a.

Magnetic meridian

b.

Magnetic equator

c.

Geographical pole

d.

Magnetic pole

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