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Fill in the blank to complete the sentence :
Unlike poles of a magnet ___________ each other.
'Induced magnetism is temporary'. Comment on this statement.
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?
Explain a suitable experiment of magnetic induction?
A magnet is carefully broken into two halves along its long axis as shown in the figure. How would the magnetic strength of each piece compare with that of the original magnet?
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? 
Explain, what is meant by magnetic induction.
