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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
- An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
- The ratio of the numerical value of the average velocity and average speed
- If the velocity of sound in air is 350 m/s, thent he fundamental frequency
- The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
- If force is proportional to square of velocity, then the dimension of proportionality
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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