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A wire in the form of a circular loop of one turn, carrying a current, produces a magnetic field B at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is
Options
(a) 5 B
(b) 3 B
(c) 2 B
(d) 4 B
Correct Answer:
4 B
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
- A step-up transformer operates on a 230 V line and supplies a current of 2 A.
- A source of light is placed at a distance of 50 cm from a photocell and the stopping
- A spherical shell of radius 10cm is carrying a charge q. If the electric potential
- The e.m.f. of a battery is 2 V and its internal resistance is 0.5 Ω. The maximum
- If a wire is stretched to four times its length, then the specific resistance
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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