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A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is B. It is then bent into a circular coil of n turns. The magnetic field at the centre of this coils of n turns will be
Options
(a) nB
(b) n²B
(c) 2nB
(d) 2n²B
Correct Answer:
n²B
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
- In which of the follows decays, the element does not change?
- A source and an observer approach each other with same velocity 50 m/s. If the frequency
- Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to
- Light of wavelength λ from a point source falls on a small circular obstacle
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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