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Two parallel long wires carry currents i₁ and i₂ with i₁ > i₂ . When the currents are in the same direction, then the magnetic field midway between the wires is 10μT. When the direction of i₂ is reversed, then it becomes 40μT. Then, ratio of i₁/ i₂ is
Options
(a) (3:4)
(b) (5:3)
(c) (7:11)
(d) (11:7)
Correct Answer:
(5:3)
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 leaf which contains only green pigments is illuminated by a laser light
- A bullet emerges from a barrel of length 1.2 m with a speed of 640 ms⁻¹.
- By sucking through a straw, a student can reduce the pressure of his lungs
- A body covers 200 cm in the first 2 seconds and 220 cm in the next 4 seconds.
- Two metal spheres of radii 0.01m and 0.02m are given a charge of 15mC and 45mC
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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