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The magnetic field at the centre of a circular coil carrying current I ampere is B. If the coil is bent into smaller circular coil of n turns, then its magnetic field at the centre is B’. The ratio between B’ and B is
Options
(a) (1:1)
(b) n:1
(c) n²:1
(d) 2n:1
Correct Answer:
n²:1
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 charged particle experiences magnetic force in the presence of magnetic field.
- A long straight wire carrying current of 30A is placed in an external uniform
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
- A wooden stick 2 m long is floating on the surface of water. The surface tension
- The work function of metals is in the range of 2 eV to 5 eV.
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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