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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
- The half life of a radioactive isotope ‘X’ is 20 years. It decays to another element Y
- An electric bulb has a rated power of 50W at 100 V. if it used on an a.c. source
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- A point charge q is placed at a distance x/2 directly above the centre of a cube
- A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
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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