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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
- The electromagnetic theory of light failed to explain
- The wing span of an aeroplane is 20 m. It is flying in a field where the vertical
- The speed of light in media M₁ and M₂ are 1.5×10⁸ ms⁻¹ and 2×10⁸ ms⁻¹ respectively.
- The polarising angle of glass is 57⁰. A ray of light which is incident at this angle
- A body of mass 0.5 kg travels in a straight line with velocity v=a x³/², where
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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