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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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- Two straight wires each 10cm long are parallel to one another and seperated by 2 cm.
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
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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
- You are marooned on a frictionless horizontal plane and cannot exert any horizontal
- Two straight wires each 10cm long are parallel to one another and seperated by 2 cm.
- A particle of mass m oscillates along x-axis according to equation x = a sin ?t
- A radioactive sample S₁ having an activity of 5 μCi has twice the number of nuclei
- Three masses are placed on the x-axis : 300 g at origin, 500 g at x = 40 cm
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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