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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 induced emf in a coil of 10 H inductance in which current varies
- A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
- A wooden stick 2 m long is floating on the surface of water. The surface tension
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- A body is moving in a vertical circle. The string must remain taut at the highest point
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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