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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
- Which of the following phenomena does not show the wavenature of light?
- The velocity of molecules of a gas at temperature 120 K is v. At what temperature
- An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change
- A galvanometer coil has a resistance of 15 ohm and gives full scale deflection
- An engine has an efficiency of 1/6. When the temperature of sink is reduced
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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