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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
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
- A 2 kg mass starts from rest on an inclined smooth surface with inclination
- The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
- If an electron and a proton have the same de-Broglie wavelength, then the kinetic
- If a carnot engine is working with source temperature at 227⁰C and sink
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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