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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
- The speed of an electron having a wavelength of 10⁻¹⁰ m is
- Two metal spheres of radii 0.01m and 0.02m are given a charge of 15mC and 45mC
- The acceleration of an electron in an electric field of magnitude 50 V/cm,
- A student measures the terminal potential difference (V) of a cell
- When a charged oil drop moves upwards in an electric field,
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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