Field Around A Wire
An electrical current flows across an infinite rectilinear wire. If the intensity of is doubled, the magnetic field at a generic point
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1 solution
The magnetic field around a straight current carrying wire can be derived from the Biot-Savart law , and is given by B = 2 π r μ 0 I .
The magnetic field is proportional to the magnitude of current in the wire. If the current in the wire is doubled, then the magnetic field also doubles.