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The magnetic field outside a long straight current carrying wire depends on the distance "R" from the wire axis according to:

Correct answer: B. I/R

  • A. R
  • B. I/R
  • C. I/R2
  • D. I/R3

Explanation

Explanation is given below: (L = circumference = 2(pi)r) B = 1/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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