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A large circular coil of N  turns and radius R carries a time varying current I = I0 sin (ωt). A small circular coil of n  turns and radius r (r << R) is placed at the center of the large coil such that the coils are concentric and coplanar. The induced emf in the small coil :
  • a)
    leads the current in the large coil by π/2
  • b)
    lags the current in the large coil by π/2
  • c)
    is in phase with the current in the large coil.
  • d)
    lags the current in the large coil by π
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A large circular coil ofN turns and radiusRcarries a time varying curr...
Flux through small coil is
Hence, emf  is lay behind the large coil current by π/2
The correct answer is: lags the current in the large coil by π/2
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Most Upvoted Answer
A large circular coil ofN turns and radiusRcarries a time varying curr...
Ωt). The magnetic field at the center of the coil is given by the equation B = μ0NI0/R sin (ωt), where μ0 is the permeability of free space.
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A large circular coil ofN turns and radiusRcarries a time varying currentI = I0sin (ωt).A small circular coil ofn turns and radiusr(r<<R)is placed at the center of the large coil such that the coils are concentric and coplanar. The induced emf in the small coil :a)leads the current in the large coil byπ/2b)lags the current in the large coil byπ/2c)is in phase with the current in the large coil.d)lags the current in the large coil byπCorrect answer is option 'B'. Can you explain this answer?
Question Description
A large circular coil ofN turns and radiusRcarries a time varying currentI = I0sin (ωt).A small circular coil ofn turns and radiusr(r<<R)is placed at the center of the large coil such that the coils are concentric and coplanar. The induced emf in the small coil :a)leads the current in the large coil byπ/2b)lags the current in the large coil byπ/2c)is in phase with the current in the large coil.d)lags the current in the large coil byπCorrect answer is option 'B'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about A large circular coil ofN turns and radiusRcarries a time varying currentI = I0sin (ωt).A small circular coil ofn turns and radiusr(r<<R)is placed at the center of the large coil such that the coils are concentric and coplanar. The induced emf in the small coil :a)leads the current in the large coil byπ/2b)lags the current in the large coil byπ/2c)is in phase with the current in the large coil.d)lags the current in the large coil byπCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A large circular coil ofN turns and radiusRcarries a time varying currentI = I0sin (ωt).A small circular coil ofn turns and radiusr(r<<R)is placed at the center of the large coil such that the coils are concentric and coplanar. The induced emf in the small coil :a)leads the current in the large coil byπ/2b)lags the current in the large coil byπ/2c)is in phase with the current in the large coil.d)lags the current in the large coil byπCorrect answer is option 'B'. Can you explain this answer?.
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