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An electric current passes through a long straight wire. At a distance 5 cm from the wire, the magnetic field is B. The field at 20 cm from the wire would be
Options
(a) B / 6
(b) B / 4
(c) B / 3
(d) B / 2
Correct Answer:
B / 4
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
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
- The depletion layer in the p-n junction region is caused by
- A dynamo converts
- CO₂ laser uses
- A force of 10 newton acts on a body of mass 20 kg for 10 seconds. Change in its momentum
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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