The property of a magnet due to which it attracts the objects made of iron and stays in N-S direction when suspended freely called magnetism. The magnet which does not lose their magnetic with normal treatment is called a permanent magnet. The material which retains their magnetism for a long time is called hard magnetic materials. Take this quiz and know more about magnetism.
1. The horseshoe magnet has the shape like the letter.......
A. P
B. M
C. U
D. V
2. When poles of two magnets are brought close together, they exert force on each other. This force is called.......... between the poles.
A. External
B. Internal
C. Intersection
D. None of the above
3. The substance, when placed in an external magnetic field, acquire feeble magnetism opposite to the direction of the magnetic field, is called ......
A. Paramagnetic substance
B. Ferromagnetic substance
C. Diamagnetic substance
D. Magnetic substance
4. Which one of the following is a diamagnetic substance?
A. Aluminium
B. Oxygen
C. Zinc
D. Cobalt
5. Which one of the following is a paramagnetic substance?
A. Al
B. Na
C. Mn
D. All of these
6. Which one of the following is the example of a ferromagnetic substance?
A. Iron
B. Aluminium
C. Sodium
D. Water
7. Which one of the following is the unit of the magnetic field?
A. Wb/m2
B. N/A-m
C. Both of these
D. None of these
8. The direction of force applied on the conductor may be determined by the.........
A. Fleming's right hand rule
B. Fleming's left hand rule
C. Both of these
D. None of these
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