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A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field such that is perpendicular to the plane of the loop. The magnetic force acting on the loop is
  • a)
    irB0
  • b)
    2πirB0
  • c)
    zero
  • d)
    πirB0
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A conducting circular loop of radius r carries a constant current i. I...
The magnetic field is perpendicular to the plane of the paper. Let us consider two diametrically opposite elements. By Fleming's left hand rule, on element AB the direction of force will be leftwards and the magnitude will be 
dF = I ( d l)Bsin 90°= I ( dl)B
On element CD, the direction of force will be towards right on the plane of the paper and the magnitude will be
dF = I ( d l)B.
These two forces will cancel out.
NOTE : Similarly, all forces acting on the diametrically opposite elements will cancel out in pair. The net force acting on the loop will be zero.
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A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field such that is perpendicular to the plane of the loop. The magnetic force acting on the loop isa)irB0b)2πirB0c)zerod)πirB0Correct answer is option 'C'. Can you explain this answer?
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A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field such that is perpendicular to the plane of the loop. The magnetic force acting on the loop isa)irB0b)2πirB0c)zerod)πirB0Correct 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 conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field such that is perpendicular to the plane of the loop. The magnetic force acting on the loop isa)irB0b)2πirB0c)zerod)πirB0Correct 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 conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field such that is perpendicular to the plane of the loop. The magnetic force acting on the loop isa)irB0b)2πirB0c)zerod)πirB0Correct answer is option 'C'. Can you explain this answer?.
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