The current in a long wire creates a magnetic field in the region around the wire.How is the strength of the field at distance r from the wire center related to the magnitude of the field? A)field directly proportional to r B)field inversely proportional to r C)field directly proportional to r² D)field inversely proportional to r²

Question

Quizplus · Accepted Answer

The strength of the magnetic field at distance r from the wire center is inversely proportional to the distance r. This is governed by the inverse square law, which states that the strength of the magnetic field decreases with the square of the distance from the wire. Therefore, as distance increases, the strength of the magnetic field decreases.

The Current in a Long Wire Creates a Magnetic Field