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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 spring when stretched by 2mm containing energy 4 J. If it is stretched
- If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
- A condenser has a capacity 2 μF and is charged to a voltage of 50 V. The energy
- A wave travelling in the +ve x-direction having displacement along y-direction as 1m
- An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp
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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