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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
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- A drum of radius R and mass M, rolls down without slipping along an inclined plane
- Ring, hollow ring and solid sphere are rolled down from inclined plane
- The liquid-crystal phase of a matter is called
- Colours appear on a thin soap film and soap bubbles due to the phenomenon of
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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