a) Draw a sketch to show the magnetic lines of force due to a current-carrying straight conductor.
b) Name and state the rule to determine the direction of magnetic field around a straight current-carrying conductor.

Answer:

a) The diagram required:

b) Maxwell’s right hand rule is used to determine the magnetic field direction around a straight current-carrying wire. The thumb points in the direction of the current, while the fingers encircling the wire point in the direction of the magnetic field lines.