Question

the magnetic field at a point at distance r from the current element is proportional to

Answer 1

Answer:

Explanation:

answer is r

Answer 2

A magnetic field is created by a current-carrying wire. The magnetic field at a point caused by an element of a conductor carrying current is, according to Biot-Savart's law.

• It is directly proportional to the strength of the current (I).
• It is directly proportional to the length of the element (dl).
• It is directly proportional to the sine of the angle between the element and the line joining the element to the point.
• It is inversely proportional to the square of the distance between the element and the point. (r)

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