Coercivity and retentivity of soft iron is low, because its magnetisation disappears easily on the removal of external magnetising field.
PHXII05:MAGNETISM and MATTER
360514
Assertion : A device for storing memory displays a hysteresis loop such as by a ferromagnetic substance. Reason : Ferromagnetic substances are those in which each individual atom has a non zero magnetic moment.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Memory storage devices show a hysteresis loop, a trait of ferromagnetic substances where atomic dipoles align, giving each particle a magnetic moment. The loop signifies the material's magnetization history, and so "storing" making ferromagnetics ideal for magnetic storage media. So correct option is (2).
PHXII05:MAGNETISM and MATTER
360515
The area under the hysteresis loop is proportional to
1 Electrical energy per unit volume
2 Thermal energy per unit volume
3 Mechanical energy per unit volume
4 Magnetic energy density
Explanation:
Conceptual Question
PHXII05:MAGNETISM and MATTER
360516
The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has:
1 Low coercivety and high retentivety
2 Low coercivety and low permeability
3 High permeability and low retentivety
4 High permeability and high retentivety
Explanation:
\(C=\) Coercivity \(R\) = Retentivity The hystersis curve is shown. It shall not be large loop (as for steel). Soft iron is used.
Coercivity and retentivity of soft iron is low, because its magnetisation disappears easily on the removal of external magnetising field.
PHXII05:MAGNETISM and MATTER
360514
Assertion : A device for storing memory displays a hysteresis loop such as by a ferromagnetic substance. Reason : Ferromagnetic substances are those in which each individual atom has a non zero magnetic moment.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Memory storage devices show a hysteresis loop, a trait of ferromagnetic substances where atomic dipoles align, giving each particle a magnetic moment. The loop signifies the material's magnetization history, and so "storing" making ferromagnetics ideal for magnetic storage media. So correct option is (2).
PHXII05:MAGNETISM and MATTER
360515
The area under the hysteresis loop is proportional to
1 Electrical energy per unit volume
2 Thermal energy per unit volume
3 Mechanical energy per unit volume
4 Magnetic energy density
Explanation:
Conceptual Question
PHXII05:MAGNETISM and MATTER
360516
The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has:
1 Low coercivety and high retentivety
2 Low coercivety and low permeability
3 High permeability and low retentivety
4 High permeability and high retentivety
Explanation:
\(C=\) Coercivity \(R\) = Retentivity The hystersis curve is shown. It shall not be large loop (as for steel). Soft iron is used.
Coercivity and retentivity of soft iron is low, because its magnetisation disappears easily on the removal of external magnetising field.
PHXII05:MAGNETISM and MATTER
360514
Assertion : A device for storing memory displays a hysteresis loop such as by a ferromagnetic substance. Reason : Ferromagnetic substances are those in which each individual atom has a non zero magnetic moment.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Memory storage devices show a hysteresis loop, a trait of ferromagnetic substances where atomic dipoles align, giving each particle a magnetic moment. The loop signifies the material's magnetization history, and so "storing" making ferromagnetics ideal for magnetic storage media. So correct option is (2).
PHXII05:MAGNETISM and MATTER
360515
The area under the hysteresis loop is proportional to
1 Electrical energy per unit volume
2 Thermal energy per unit volume
3 Mechanical energy per unit volume
4 Magnetic energy density
Explanation:
Conceptual Question
PHXII05:MAGNETISM and MATTER
360516
The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has:
1 Low coercivety and high retentivety
2 Low coercivety and low permeability
3 High permeability and low retentivety
4 High permeability and high retentivety
Explanation:
\(C=\) Coercivity \(R\) = Retentivity The hystersis curve is shown. It shall not be large loop (as for steel). Soft iron is used.
Coercivity and retentivity of soft iron is low, because its magnetisation disappears easily on the removal of external magnetising field.
PHXII05:MAGNETISM and MATTER
360514
Assertion : A device for storing memory displays a hysteresis loop such as by a ferromagnetic substance. Reason : Ferromagnetic substances are those in which each individual atom has a non zero magnetic moment.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Memory storage devices show a hysteresis loop, a trait of ferromagnetic substances where atomic dipoles align, giving each particle a magnetic moment. The loop signifies the material's magnetization history, and so "storing" making ferromagnetics ideal for magnetic storage media. So correct option is (2).
PHXII05:MAGNETISM and MATTER
360515
The area under the hysteresis loop is proportional to
1 Electrical energy per unit volume
2 Thermal energy per unit volume
3 Mechanical energy per unit volume
4 Magnetic energy density
Explanation:
Conceptual Question
PHXII05:MAGNETISM and MATTER
360516
The soft-iron is a suitable material for making an electromagnet. This is because soft-iron has:
1 Low coercivety and high retentivety
2 Low coercivety and low permeability
3 High permeability and low retentivety
4 High permeability and high retentivety
Explanation:
\(C=\) Coercivity \(R\) = Retentivity The hystersis curve is shown. It shall not be large loop (as for steel). Soft iron is used.
