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A bar magnet when placed at an angle of 30o to the direction of magnetic field induction of 5*10− 5 T , experiences a moment of couple 2.5*10− 6 N-m. If the length of the magnet is 5cm its pole strength is:
  • a)
    2*10− 2 A-m
  • b)
    5*102 A-m
  • c)
    2 A-m
  • d)
    5 A-m
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A bar magnet when placed at an angle of 30o to the direction of magnet...
Given Data:
Angle of magnet with magnetic field induction: 30°
Magnetic field induction: 5*10^-5 T
Moment of couple: 2.5*10^-6 N-m
Length of magnet: 5 cm

Formula Used:
Magnetic moment (m) = pole strength (m) * length of magnet (l)

Calculation:
Given moment of couple (τ) = m * B * sinθ
2.5*10^-6 = m * 5*10^-5 * sin(30°)
m = 2*10^-2 A-m
Therefore, the pole strength of the magnet is 2 A-m.
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A bar magnet when placed at an angle of 30o to the direction of magnetic field induction of 5*10− 5 T , experiences a moment of couple 2.5*10− 6 N-m. If the length of the magnet is 5cm its pole strength is:a)2*10− 2 A-mb)5*102 A-mc)2 A-md)5 A-mCorrect answer is option 'C'. Can you explain this answer?
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A bar magnet when placed at an angle of 30o to the direction of magnetic field induction of 5*10− 5 T , experiences a moment of couple 2.5*10− 6 N-m. If the length of the magnet is 5cm its pole strength is:a)2*10− 2 A-mb)5*102 A-mc)2 A-md)5 A-mCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A bar magnet when placed at an angle of 30o to the direction of magnetic field induction of 5*10− 5 T , experiences a moment of couple 2.5*10− 6 N-m. If the length of the magnet is 5cm its pole strength is:a)2*10− 2 A-mb)5*102 A-mc)2 A-md)5 A-mCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bar magnet when placed at an angle of 30o to the direction of magnetic field induction of 5*10− 5 T , experiences a moment of couple 2.5*10− 6 N-m. If the length of the magnet is 5cm its pole strength is:a)2*10− 2 A-mb)5*102 A-mc)2 A-md)5 A-mCorrect answer is option 'C'. Can you explain this answer?.
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