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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 radiotransmitter radiates 1 kW power at a wavelength 198.6 m. How many photons
- When there is no heat change from surroundings in a system, then the process
- A spring of spring constant 5 x 10³ Nm⁻¹ is streched intially by 5 cm from
- A thin circular ring of mass M and radius R rotates about an axis through its centre
- The ratio of magnetic dipole moment of an electron of charge e and mass m
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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