Draw a sketch of the magnetic field due to a long straight current-carrying conductor. - Leaving Cert Physics - Question 0 - 2005

To illustrate the magnetic field due to a long straight current-carrying conductor, follow these steps:

1. Draw the Conductor: Begin by drawing a vertical straight line to represent the current-carrying conductor.

2. Indicate the Current Direction: Draw an arrow along the line to show the direction of the electric current (e.g., upwards).

3. Draw Concentric Circles: Around the conductor, draw a series of concentric circles. These circles should represent the magnetic field lines surrounding the conductor.

4. Add Arrows on the Circles: On each of the concentric circles, place arrows showing the direction of the magnetic field. The arrows should circle around the conductor in a counter-clockwise direction if the current is flowing upwards, consistent with the right-hand grip rule.

This sketch should clearly demonstrate both the direction of the current in the conductor and the orientation of the magnetic field around it.