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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 racing cars of masses m₁ and m₂ are moving in circles of radii
- A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction
- When we close one slit in the young’s double slit experiment, then
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- Which of the following substances has the highest elasticity?
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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