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प्रश्न
How do you account for the following fact?
Steel makes better permanent magnet than soft iron.
उत्तर
Steel makes better permanent magnet than soft iron because on magnetizing steel, steel retains their magnetic behavior for longer time even after the removal of the source which is magnetizing the steel.
While the soft iron retains the properties of magnetism only so long as the current is passing through the coil i.e. as long as the source which is magnetizing the soft iron is present.
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संबंधित प्रश्न
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.
Fill in the blank to complete the sentence :
A freely suspended magnet rests in the geographic ___________ direction.
How do you account for the following fact?
Iron becomes magnetized when placed in a coil carrying direct current.
How do you account for the following fact?
Bar magnets lose their magnetism when heated strongly.
What is 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?
Give scientific reason:
A ' cracking' noise may be heard on removing a nylon shirt, blouse, or stockings.
