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A circular coil of radius 10cm having 100 turns carries a current of 3.2A. the given coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 5T in the horizontal direction exists such that initially the axis of the coil is in direction of the field. The coil rotates through an angle of 60∘ under the influence of magnetic field. The magnitude of torque on the coil in the final position is
  • a)
    25 N m
  • b)
    25√3 N m
  • c)
    40 N m
  • d)
    40√3 N m
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A circular coil of radius 10cm having 100 turns carries a current of 3...
Torque,

Here, m = 10Am2, B=5T
Now initially θ = 0
Thus, initial torque, τi =0
In final position θ = 60
∴ τf = mBsin60∘ 
= 25√3 N m
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A circular coil of radius 10cm having 100 turns carries a current of 3.2A.the given coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 5T in the horizontal direction exists such that initially the axis of the coil is in direction of the field. The coil rotates through an angle of 60 under the influence of magnetic field. The magnitude of torque on the coil in the final position isa)25 N mb)25√3 N mc)40 N md)40√3 N mCorrect answer is option 'B'. Can you explain this answer?
Question Description
A circular coil of radius 10cm having 100 turns carries a current of 3.2A.the given coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 5T in the horizontal direction exists such that initially the axis of the coil is in direction of the field. The coil rotates through an angle of 60 under the influence of magnetic field. The magnitude of torque on the coil in the final position isa)25 N mb)25√3 N mc)40 N md)40√3 N mCorrect 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 circular coil of radius 10cm having 100 turns carries a current of 3.2A.the given coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 5T in the horizontal direction exists such that initially the axis of the coil is in direction of the field. The coil rotates through an angle of 60 under the influence of magnetic field. The magnitude of torque on the coil in the final position isa)25 N mb)25√3 N mc)40 N md)40√3 N mCorrect 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 circular coil of radius 10cm having 100 turns carries a current of 3.2A.the given coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 5T in the horizontal direction exists such that initially the axis of the coil is in direction of the field. The coil rotates through an angle of 60 under the influence of magnetic field. The magnitude of torque on the coil in the final position isa)25 N mb)25√3 N mc)40 N md)40√3 N mCorrect answer is option 'B'. Can you explain this answer?.
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