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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.
Related Questions: - Under constant pressure, graph between P and 1/V is a
- A bar magnet of moment M and pole strength m is cut into parts of equal lengths.
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
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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
- Under constant pressure, graph between P and 1/V is a
- A bar magnet of moment M and pole strength m is cut into parts of equal lengths.
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- An alternating voltage given as, V=100√2 sin100t V is applied to a capacitor
- An electric dipole placed in a non-uniform electric field experiences
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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