Concept explainers
To Choose: The correct option.
Answer to Problem 9STP
Option D
Explanation of Solution
Introduction:
A magnet is a substance which attracts other magnetic materials. A magnet has two poles-North pole and south pole. Magnetic field lines emerge from north pole and enter in south pole.
In a temporary magnet, the domains are not always aligned. In the presence of a strong magnetic field, the domains get aligned and the material acts as a magnet. For example, iron. It can be turned off by removing the applied magnetic field. The strength of the magnetic field of a temporary magnet can be varied.
In a permanent magnet, the domains are always aligned and it cannot be turned off. A permanent magnet is composed of magnetic materials such as cobalt, nickel and iron.
Conclusion:
Thus, option D is the correct option.
Chapter 24 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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