Test: Magnetic Properties


10 Questions MCQ Test Physics Class 12 | Test: Magnetic Properties


Description
This mock test of Test: Magnetic Properties for Class 12 helps you for every Class 12 entrance exam. This contains 10 Multiple Choice Questions for Class 12 Test: Magnetic Properties (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Magnetic Properties quiz give you a good mix of easy questions and tough questions. Class 12 students definitely take this Test: Magnetic Properties exercise for a better result in the exam. You can find other Test: Magnetic Properties extra questions, long questions & short questions for Class 12 on EduRev as well by searching above.
QUESTION: 1

What is the unit of susceptibility?​

Solution:

In electromagnetism the magnetic susceptibility (Latin: susceptibilis, “receptive”; denoted X) is a measure of how much a material will become magnetized in an applied magnetic field. Mathematically, it is the ratio of magnetization M(magnetic moment per unit volume) to  the applied magnetizing field intensity H.

QUESTION: 2

The magnetic induction left behind in the sample after the magnetizing field has been removed is called

Solution:
QUESTION: 3

Declination is the angle between:

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QUESTION: 4

The ferromagnetic materials can be magnetised easily because

Solution:
QUESTION: 5

What kinds of materials are used for coating magnetic tapes?

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QUESTION: 6

A particle of charge q and mass m moves in a circular orbit of radius r with angular speed. The ratio of the magnitude of its magnetic moment to that of its angular momentum depends on

Solution:

To find the magnetic moment due to a single particle, it is advisable to consider the equivalent current due to it

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QUESTION: 7

A wire of length L m carrying current i A is bent in the form of a circle. The magnitude of magnetic moment is

Solution:

If r is the radius of the circle,
then L=2πr or, r=L/2π
Area=A=πr2=πL2/4π2​= L2​/4π
Magnetic Moment=IA= IL2/4π

QUESTION: 8

If the susceptibility of a metal at saturation is 4500, then what is the permeability of this metal at saturation?​

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QUESTION: 9

The maximum value of permeability of a metal (77% Ni , 16% Fe , 5% Cu , 2% Cr) is 0.164 T-m/A. What will be the maximum relative permeability and susceptibility?​

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QUESTION: 10

The units of magnetic pole strength and magnetic dipole moment of a bar magnet are

Solution: