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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
- Zenor breakdown in a semiconductor diode occurs when
- A Si and a Ge diode has identical physical dimensions. The bandgap in Si is larger
- In a common emitter (CE) amplifier having a voltage gain G, the transistor
- When a beam of light is used to determine the position of an object,
- Which of the following transitions in hydrogen atoms emit photons of highest frequency?
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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