Magnetic Field Pattern Around Straight Conductor

The magnetic field generated by a straight conductor carrying electric current follows a specific pattern. This pattern can be determined using the right-hand rule.

• Right-Hand Rule: Imagine gripping the straight conductor with your right hand such that your thumb points in the direction of the conventional current flow.
• Field Direction: Your fingers, as they curl around the conductor, indicate the direction of the magnetic field lines.
• Field Shape: Consequently, the magnetic field lines form concentric circles centered on the conductor. The plane of these circles is perpendicular to the conductor.

Therefore, the magnetic field around a straight current-carrying conductor forms concentric circles.

Conclusion: The correct description is that the magnetic field forms concentric circles around the conductor.