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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
- The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio
- A fluid is in streamline flow across a horizontal pipe of variable area of cross section
- If the kinetic energy of the particle is increased to 16 times its previous value
- A galvanometer having resistance of 50 Ω requires a current of 100μA to give full
- A carbon film resistor has colour code green, black, violet, gold. The value
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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