Question

In figure 1, A pattern of concentric circles indicating the field lines of a magnetic field around a straight conducting wire. The arrows in the circles show the direction of the field lines. A close up of the pattern is obtained in the figure 2. This can be easily understood by using​

Answer 1

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Answer 2

Magnetic field lines around a current-carrying straight conductor are concentric circles with their centers on the wire.

Explanation:

• The magnetic field's strength is determined by the current flowing through the conductor.
• According to Maxwell's Corkscrew Rule, if you hold a current-carrying conductor in your right hand, the direction in which your fingers encircle determines the direction of magnetic lines. Maxwell's right-handed corkscrew rule, determines the direction of magnetic field lines of force around a conductor. It also depends on the current's direction of travel in the conductor.
• This can easily be understood by using a compass to determine its direction.