Substances that have the property of attracting small pieces of iron, nickel, Cobalt, etc are called magnets and this property of attraction is called magnetism. A substance occurring in nature and having the properties of a magnet is called natural magnet. The greeks observed that in naturally occurring substance is called 'lodestone' had the property of attracting iron pieces kept nearby. So, lodestone is the naturally occurring magnet. It is actually a black colored, oxide ore of iron called magnetite which behaves like a magnet. Let's check your knowledge about the Magnet and Magnetic Field quiz.
1. A powerful magnet is made up of...
A. Soft iron
B. Brass
C. Domain
D. Aluminium
2. Permanent magnet is made up of______.
A. Domain
B. Brass
C. Soft iron
D. Nickel
3. Which of the following is a magnetic substance?
A. Mercury
B. Silver
C. Iron
D. Gold
4. Which of the following is a diamagnetic substance?
A. Oxygen
B. Nickel
C. Gold
D. Platinum
5. Following is ferromagnetic substance?
A. Manganese
B. Gold
C. Steel
D. Water
6. Which of the following is paramagnetic substance?
A. Platinum
B. Copper
C. Pig iron
D. Nickel
7. Which of the following device is used for measuring the magnetic field?
A. Thermometer
B. Parameter
C. Hygrometer
D. Flux meter
8. Angle of dip is zero on_______.
A. Poles
B. Magnetic Equator
C. Magnetic North Pole
D. Magnetic South Pole
9. The angle of dip at the magnetic poles of the Earth is______ degree.
A. Zero
B. 45
C. 30
D. 90
10. What is the unit of the magnetic area?
A. Newton
B. Newton / ampere- metre
C. Beber / metre
D. Beber
11. The shape of the earth's magnetic field resembles the date of a...
A. Bar magnet
B. Electro-magnet
C. Horse- shoe magnet
D. Ball-ended magnet
12. The angle between the magnetic meridian and the geographical Meridian is called...
A. Angle of dip
B. Angle of declination
C. Magnetic meridian
D. Magnetic moment
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