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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.
Related Questions: - IF A⃗ and B⃗ are two vectors and θ is the angle between them
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
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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
- IF A⃗ and B⃗ are two vectors and θ is the angle between them
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
- Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100V
- A simple pendulum has a time period T₁ when on the earth’s surface and T₂ When taken
- Two radiations of photons energies 1 eV and 2.5 eV, successively
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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