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An electric current passes through a long straight wire. At a distance 5 cm from the wire, the magnetic field is B. The field at 20 cm from the wire would be
Options
(a) B / 6
(b) B / 4
(c) B / 3
(d) B / 2
Correct Answer:
B / 4
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 paramagnetic sample shows a net magnetisation of 0.8 Am⁻¹, when placed
- For a satellite escape velocity is 11 kms⁻¹.If the satellite is launched at an angle
- The velocity of a particle at an instant is 10 ms⁻¹ and after 5 s the velocity
- Which of the following statements is correct?
- If the radioactive dacay constant of radium is 1.07 x 10⁻⁴ year⁻¹, then its half-life
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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