McqMate
| Q. |
In the process of magnetization of a bar |
| A. | The entire bulk of the bar gets magnetized |
| B. | Only the surface of the bar gets magnetized |
| C. | Only the ends of the bar get magnetized |
| D. | Only some parts of the outer layers of the bar get magnetized |
| Answer» A. The entire bulk of the bar gets magnetized | |
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Explanation: In classical electromagnetism, magnetization or magnetic polarization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. The origin of the magnetic moments responsible for magnetization can be either microscopic electric currents resulting from the motion of electrons in atoms, or the spin of the electrons or the nuclei. In the process of magnetization of a bar, the entire bulk of the bar gets magnetized. |
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