Discussion :: Physics
- The method of magnetisation is:
|
A.
Hammering a magnet |
|
B.
Heating a magnet |
|
C.
Passing direct current through it |
|
D.
Passing alternating current through it |
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Answer : Option A
Explanation :
Hammering a rod will either allow it to become slightly magnetic if laid along a magnetic field (i.e.North - South) or demagnetise it if laid across the field lines (i.e. East-West). A current passing through a coil will produce a magnetic field.
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