Question

Write the shape of the magnetic field produced by a current carrying straight conductor. State the rule to find the direction of this field.

Answer 1

Shape of the Magnetic Field Produced by a Current-Carrying Straight Conductor:
The magnetic field produced by a current-carrying straight conductor forms concentric circular loops around the conductor. The field lines are in the shape of concentric circles, with the conductor at the center. The magnetic field strength decreases as the distance from the conductor increases.

Rule to Find the Direction of the Magnetic Field:
To determine the direction of the magnetic field around a current-carrying conductor, we use the Right-Hand Thumb Rule.
According to the Right-Hand Thumb Rule: - Hold the conductor with your right hand such that your thumb points in the direction of the current (from positive to negative). - The curl of your fingers around the conductor shows the direction of the magnetic field lines.

Thus, the magnetic field forms circular loops around the conductor, with the direction given by the curl of your fingers when your right thumb points in the direction of the current.