Lesson Plan: Magnetic Fields Produced by Electric Currents Physics • Third Year of Secondary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the magnetic field that is produced by a wire carrying an electric current.
Objectives
Students will be able to
- recognize that an electric current in a wire will produce a magnetic field around the wire,
- recognize that the larger the electric current in the wire, the stronger the magnetic field produced,
- recognize and draw the shape of the magnetic field lines of the magnetic field produced by a current-carrying wire,
- identify the direction of the magnetic field near to a current-carrying wire,
- state what a solenoid is,
- recognize that the magnetic field produced by a solenoid can be increased in strength by adding a core of a magnetic material.
Prerequisites
Students should already be familiar with
- what a current is,
- what a magnetic field is,
- how to draw the field lines of the magnetic field produced by a bar magnet.
Exclusions
Students will not cover
- the magnetic fields produced by moving, free charges,
- the effect of a magnetic field on moving charges, including currents in wires,
- the attractive or repulsive forces between two or more current-carrying wires,
- the force experienced by a current-carrying wire in a magnetic field,
- the shape of the magnetic field produced by a solenoid,
- calculations of the magnetic field produced by a solenoid,
- motors,
- generators,
- transformers.
