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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
- Two charges of equal magnitude q are placed in air at a distance 2a
- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
- A nucleus of uranium decays at rest into nuclei of thrrium and helium. Then
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 kg
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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