Magnetism Test

Result

Magnetism Test - 4

Score
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Rank
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Weekly Quiz Competition

Question 1
1 / -0

Which of the following quantities is/are used to determine the strength of Earth`s magnetic field at a point on Earth's surface?
(I) Magnetic declination
(II) Dip

A
Both I and II

B
Neither I nor II

C
I only

D
II only

Solution

By measuring the horizontal component of Earth`s magnetic field and angle of dip, the strength of Earth`s magnetic field can be found.
Question 2
1 / -0

When a material is subjected to a small magnetic field H, the intensity of magnetisation is proportional to

A
H^1/2

B
H

C
H²

D
H^–1/2

Solution

The intensity of magnetisation (A_d) is defined as the magnetic moment per unit volume of the material. The magnitude of M depends upon the magnetisation current, which is proportional to H. Hence, the correct choice is (2).