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A wire of one metre length carries a constant current. The wire is bent to form a circular loop. The magnetic field at the centre of this loop is B.The same is now bent to form a circular loop of smaller radius having four turns. The magnetic field at the centre of this new loop will be
Options
(a) B/2
(b) 4B
(c) B/4
(d) 16B
Correct Answer:
16B
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 input signal given to a CE amplifier having a voltage gain of 150 is
- A coil has an area of 0.05 m² and it has 800 turns. It is placed perpendicularly
- A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
- In the equation y=asin(?t+kx),the dimensionals formula of ? is
- The work function of a substance is 4.0 eV. The longest wavelength of light
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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