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Fill in the blank to complete the sentence :
The two ends of a magnet are called __________.
Fill in the blank to complete the sentence :
Unlike poles of a magnet ___________ each other.
Fill in the blank to complete the sentence :
Like poles of a magnet ______________ each other.
How do you account for the following fact?
Iron becomes magnetized when placed in a coil carrying direct current.
Describe various methods of magnetising a piece of iron.
What is magnetic induction?
A magnet is carefully broken into two equal pieces as shown in the figure. How would the magnetic field strength of each piece compare with that of the original magnet? 
A conductor B is charged by bringing another charged body A in contact 
What will be the charge gained by B?
Explain, what is meant by magnetic induction.
Give scientific reason:
A ' cracking' noise may be heard on removing a nylon shirt, blouse, or stockings.
