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Assertion (A): The deflection of a compass needle decreases as the distance from a current-carrying conductor increases.
Reason (R): The magnetic field produced by a given current in the conductor decreases as the distance from it increases.
  • a)
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b)
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  • c)
    If Assertion is true but Reason is false
  • d)
    If both Assertion and Reason are false
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Assertion (A): The deflection of a compass needle decreases as the dis...
Understanding the Assertion and Reason
The assertion states that the deflection of a compass needle decreases as the distance from a current-carrying conductor increases. This is a true statement because the magnetic field strength produced by the conductor diminishes with distance.
Magnetic Field and Distance
- A current-carrying conductor generates a magnetic field that follows the right-hand rule.
- The intensity of this magnetic field is inversely proportional to the distance from the conductor.
- As you move further away from the conductor, the magnetic field strength weakens, resulting in a smaller deflection of the compass needle.
Evaluating the Reason
The reason provided states that the magnetic field produced by a given current in the conductor decreases as the distance from it increases. This is also true.
- The magnetic field strength, represented by the formula B = μ₀I/(2πr) for a long straight conductor, indicates that as r (distance) increases, B (magnetic field strength) decreases.
- Hence, this reason accurately describes the behavior of the magnetic field in relation to distance.
Connecting Assertion and Reason
While both the assertion and reason are true, the reason does not specifically explain why the compass needle's deflection decreases. The assertion is about the observable effect in the compass needle, while the reason discusses the inherent nature of the magnetic field.
Conclusion
- Therefore, the correct answer is option 'B': Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
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Community Answer
Assertion (A): The deflection of a compass needle decreases as the dis...
  • The Assertion is true as per the information provided in the text. As the distance from a current-carrying conductor increases, the deflection of a compass needle does indeed decrease.
  • The Reason is true. The magnetic field produced by a given current in the conductor decreases as the distance from it increases, as explained in the content.
  • However, the Reason is not the correct explanation of the Assertion. While both statements are individually correct, the decrease in deflection with distance is due to the weakening magnetic field, not necessarily because the magnetic field decreases in magnitude. Hence, Option C is the correct answer for this question.
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Assertion (A): The deflection of a compass needle decreases as the distance from a current-carrying conductor increases.Reason (R): The magnetic field produced by a given current in the conductor decreases as the distance from it increases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer?
Question Description
Assertion (A): The deflection of a compass needle decreases as the distance from a current-carrying conductor increases.Reason (R): The magnetic field produced by a given current in the conductor decreases as the distance from it increases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? for BMAT 2024 is part of BMAT preparation. The Question and answers have been prepared according to the BMAT exam syllabus. Information about Assertion (A): The deflection of a compass needle decreases as the distance from a current-carrying conductor increases.Reason (R): The magnetic field produced by a given current in the conductor decreases as the distance from it increases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for BMAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The deflection of a compass needle decreases as the distance from a current-carrying conductor increases.Reason (R): The magnetic field produced by a given current in the conductor decreases as the distance from it increases.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'B'. Can you explain this answer?.
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