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A short bar magnet has a magnetic moment of 0.65JT−1, then the magnitude and direction of the magnetic field produced by the magnet at a distance 8cm from the centre of magnet on the axis is
  • a)
    2.5 × 10−4T , along NS direction
  • b)
    2.5 × 10−4T, along SN direction
  • c)
    4.5 × 10−4T, along NS direction
  • d)
    4.5 × 10−4T, along SN direction
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A short bar magnet has a magnetic moment of 0.65JT−1, then the m...
Here, M = 0.65JT−1,
d = 8cm
= 0.08m
The field produced by magnet at axial point is given by
B = 
= 2.5 × 10−4T along SN
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Most Upvoted Answer
A short bar magnet has a magnetic moment of 0.65JT−1, then the m...
The magnetic moment of a bar magnet is a measure of its strength and is defined as the product of the pole strength (magnetic charge) and the distance between the poles. It is given by the formula:

Magnetic moment = pole strength × distance between poles

In this case, the magnetic moment of the bar magnet is given as 0.65 JT (Joule-tesla). The unit Joule-tesla is equivalent to Ampere-square meter (A·m²).

Unfortunately, without additional information, it is not possible to determine the pole strength or the distance between the poles of the magnet.
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A short bar magnet has a magnetic moment of 0.65JT−1, then the magnitude and direction of the magnetic field produced by the magnet at a distance 8cm from the centre of magnet on the axis isa)2.5 × 10−4T , along NS directionb)2.5 × 10−4T, along SN directionc)4.5 × 10−4T, along NS directiond)4.5 × 10−4T, along SN directionCorrect answer is option 'B'. Can you explain this answer?
Question Description
A short bar magnet has a magnetic moment of 0.65JT−1, then the magnitude and direction of the magnetic field produced by the magnet at a distance 8cm from the centre of magnet on the axis isa)2.5 × 10−4T , along NS directionb)2.5 × 10−4T, along SN directionc)4.5 × 10−4T, along NS directiond)4.5 × 10−4T, along SN directionCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A short bar magnet has a magnetic moment of 0.65JT−1, then the magnitude and direction of the magnetic field produced by the magnet at a distance 8cm from the centre of magnet on the axis isa)2.5 × 10−4T , along NS directionb)2.5 × 10−4T, along SN directionc)4.5 × 10−4T, along NS directiond)4.5 × 10−4T, along SN directionCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A short bar magnet has a magnetic moment of 0.65JT−1, then the magnitude and direction of the magnetic field produced by the magnet at a distance 8cm from the centre of magnet on the axis isa)2.5 × 10−4T , along NS directionb)2.5 × 10−4T, along SN directionc)4.5 × 10−4T, along NS directiond)4.5 × 10−4T, along SN directionCorrect answer is option 'B'. Can you explain this answer?.
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