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Two wire loops PQRSP formed by joining two semicircular wires of radii R1 and R2 carries a current I as shown in (fig.) The magnitude of the magnetic induction at the centre C is ........
  • a)
  • b)
  • c)
  • d)
    none of these
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Two wire loops PQRSP formed by joining two semicircular wires of radii...
Magnetic field at the centre of a coil  Bc​=μo​IN​/2r
where N is the number of turns.
For semi-circular coil N=0.5
So, magnetic field at C due to semi-circular coil of radius R1​,
B1​=​ μo​I(0.5)/2R1​=​μo​I​/4R1  out of plane of paper
So, magnetic field at C due to semi-circular coil of radius R2​,
B2​=​μo​I(0.5)/2R2​=​μo​I​/4R2  into the plane of paper
Magnetic field at C due to section SR and PQ is zero.
So net magnetic field at C   Bnet​=B1​−B2​=(μo​I/4)​[(1/R1)​​−(1/R2​)​]
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Two wire loops PQRSP formed by joining two semicircular wires of radii...
Magnetic field at the centre of a coil  Bc​=μo​IN​/2r
where N is the number of turns.
For semi-circular coil N=0.5
So, magnetic field at C due to semi-circular coil of radius R1​,
B1​=​ μo​I(0.5)/2R1​=​μo​I​/4R1  out of plane of paper
So, magnetic field at C due to semi-circular coil of radius R2​,
B2​=​μo​I(0.5)/2R2​=​μo​I​/4R2  into the plane of paper
Magnetic field at C due to section SR and PQ is zero.
So net magnetic field at C   Bnet​=B1​−B2​=(μo​I/4)​[(1/R1)​​−(1/R2​)​]
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Two wire loops PQRSP formed by joining two semicircular wires of radii R1 and R2 carries a current I as shown in (fig.) The magnitude of the magnetic induction at the centre C is ........a)b)c)d)none of theseCorrect answer is option 'A'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Two wire loops PQRSP formed by joining two semicircular wires of radii R1 and R2 carries a current I as shown in (fig.) The magnitude of the magnetic induction at the centre C is ........a)b)c)d)none of theseCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two wire loops PQRSP formed by joining two semicircular wires of radii R1 and R2 carries a current I as shown in (fig.) The magnitude of the magnetic induction at the centre C is ........a)b)c)d)none of theseCorrect answer is option 'A'. Can you explain this answer?.
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