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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
- Four indentical thin rods each of mass M and length l, form a square frame
- A wire is suspended vertically from one of its ends is stretched by attaching a weight
- If a charge on the body is 1nC, then how many electrons are present on the body?
- The potential energy of a simple harmonic oscillator when the particle is half way
- When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
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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