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A long straight wire of radius a carries a steady current I. The current is uniformly distributed over its cross-section. The ratio of the magnetic field B and B’ at radial distances a/2 and 2a respectively, from the axis of the wire is
Options
(a) (1/2)
(b) 1
(c) 4
(d) (1/4)
Correct Answer:
1
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 block of mass 5 kg is moving horizontally at a speed of 1.5 m/s. A perpendicular force
- In an inductor when current changes from 2 A to 18 A in 0.05 sec, the e.m.f. induced
- To observed diffraction, the size of the obstacle
- The maximum kinetic energy of emitted electrons in a photoelectric effect
- The electromagnetic theory of light failed to explain
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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