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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.
Assertion : Electromagnetic are made of soft iron.
Reason : Coercivity of soft iron is small.
  • a)
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • b)
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • c)
    If the Assertion is correct but Reason is incorrect.
  • d)
    If both the Assertion and Reason are incorrect.
Correct answer is option 'B'. Can you explain this answer?
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Directions: These questions consist of two statements, each printed a...
Electromagnets are magnets, which can be turned on and off by switching the current on and off. As the material in electromagnets is subjected to cyclic changes (magnification and demagnetisation), the hysteresis loss of the material must be small. The material should attain high value of I and B with low value of magnetising field intensity H. As soft iron has small coercivity, so it is a best choice for this purpose.
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Directions: These questions consist of two statements, each printed a...
Explanation:

Assertion: Electromagnets are made of soft iron.
Reason: Coercivity of soft iron is small.

The statement given in the assertion is true, as Electromagnets are made of soft iron because of their magnetic properties. Soft iron has a high magnetic permeability, which means that it can be easily magnetized. Moreover, it also has a low coercivity, which means that it can be easily demagnetized. These properties make it an ideal material for use in electromagnets.

The statement given in the reason is also true, as the coercivity of soft iron is small. Coercivity is the magnetic field required to demagnetize the material. In soft iron, this value is small, which means that it can be easily demagnetized. This property is useful in electromagnets, as it allows the magnetic field to be switched on and off quickly.

However, the reason given in the statement is not a correct explanation of the assertion. While it is true that the coercivity of soft iron is small, this alone does not explain why it is used in electromagnets. Other properties such as high magnetic permeability, low hysteresis loss, and good thermal conductivity also play an important role in the selection of soft iron for use in electromagnets.

Therefore, the correct answer is option 'B', as both the assertion and reason are correct, but the reason is not a correct explanation of the assertion.
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Directions: These questions consist of two statements, each printed a...
Electromagnets are magnets which can be turned on and off by switching the current on and off.as the material in electromagnets is subjected to cyclic change the hysteresis loss of the material will be small. The material should have high value of I and B with low value of magnetising field intensity H. As soft iron has small coercivity, so it is a best choice for this purpose. 
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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Electromagnetic are made of soft iron.Reason : Coercivity of soft iron is small.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'B'. Can you explain this answer?
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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Electromagnetic are made of soft iron.Reason : Coercivity of soft iron is small.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Electromagnetic are made of soft iron.Reason : Coercivity of soft iron is small.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion : Electromagnetic are made of soft iron.Reason : Coercivity of soft iron is small.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'B'. Can you explain this answer?.
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