The strength of magnetic field around a straight conductor:
Correct answer: A. Is inversely proportional to radial distance
- A. Is inversely proportional to radial distance
- B. Obeys inverse cube law
- C. Obeys inverse square law
- D. Varies exponentially
Explanation
The magnetic field due to straight conductor is given as B=μoI/2πr where r is distance of any point P from the straight conductor, at which we want to calculate the magnetic field, which is inversely proportional to r.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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