Last Updated On 16-03-2023 - By Jeesha Sara
A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2.m, 100 turns, and carrying a current of 5.2A. The coercivity of the bar magnet is:
|
a. |
1200A\m |
b. |
2600A/m |
|
c. |
520A/jm |
d. |
285A/m |
Question ID - 50042 :- A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2.m, 100 turns, and carrying a current of 5.2A. The coercivity of the bar magnet is:
a.
1200A\m
b.
2600A/m
c.
520A/jm
d.
285A/m
A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2.m, 100 turns, and carrying a current of 5.2A. The coercivity of the bar magnet is:
|
a. |
1200A\m |
b. |
2600A/m |
|
c. |
520A/jm |
d. |
285A/m |
5.2Next Question :
A rod of length L at room temperature and uniform area of cross section. A, is made of a metal having coefficient of linear expansion 
/0C. It is observed that an external compressive force f, is applied on each of its ends, prevents any change in the length of the rod. When its temperature rises by 
T K, young’s modulus, Y for this metal is:
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a. |
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b. |
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c. |
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d. |
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