Advertisements
Advertisements
प्रश्न
How do you account for the following fact?
Steel makes better permanent magnet than soft iron.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Fill in the blank to complete the sentence :
The two ends of a magnet are called __________.
Fill in the blank to complete the sentence :
Like poles of a magnet ______________ each other.
'Induction precedes attraction'. Explain the statement.
Describe various methods of magnetising a piece of iron.
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?
Explain, what is meant by magnetic induction.
Give scientific reason:
A ' cracking' noise may be heard on removing a nylon shirt, blouse, or stockings.
Give scientific reason:
A charge can be obtained on a rubbed ebonite rod held in the hand but not on a rubbed metal rod held in the hand.
