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A wire of one metre length carries a constant current. The wire is bent to form a circular loop. The magnetic field at the centre of this loop is B.The same is now bent to form a circular loop of smaller radius having four turns. The magnetic field at the centre of this new loop will be
Options
(a) B/2
(b) 4B
(c) B/4
(d) 16B
Correct Answer:
16B
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
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- When a ceiling fan is switched off its angular velocity reduces to 50% while
- A long straight wire carries a certain current and produces a magnetic field
- Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively
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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