Advertisements
Advertisements
Question
How do you account for the following fact?
Steel makes better permanent magnet than soft iron.
Solution
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
RELATED QUESTIONS
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.
Explain the meaning of the term induced magnetism.
'Induction precedes attraction'. Explain the statement.
How do you account for the following fact?
Iron becomes magnetized when placed in a coil carrying direct current.
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.
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.
