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The magnetic field produced due to the current in a straight wire is proportional to the:

Correct answer: A. Electric current

  • A. Electric current
  • B. Length of the wire
  • C. Conducting material
  • D. Diameter of the wire

Explanation

According to Biot-Savart Law and Ampere's Law, magnetic field (B) produced by a current-carrying wire is directly proportional to magnitude of current (I) flowing through it.

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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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