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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
- Kepler’s third law states that square of period of revolution (T) of a planet
- The nuclear fusion reaction between deutrium and tritium takes place
- Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
- The self-inductance of a coil having 500 turns is 50mH. The magnetic flux
- A transistor is working in common emitter mode. Its amplification factor is 80
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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