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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 bubble is rising from bottom of a lake. The volume of bubble becomes
- Two capacitors having capacitances C₁ and C₂ are charged with 120V and 200V batteries
- A body of mass 120 kg and density 600 kg/m³ floats in water.
- Penetrating power of X-rays does not depend on
- If a small amount of antimony is added to germanium crystal
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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