A slinky is used as a variable density solenoid while a magnetic field probe is used to investigate the field in the coil. A value for the permeability of free space is determined.
Understand the nature of a magnetic field around a solenoid.
Relate magnetic field to current, length and number of turns of a solenoid.
Perform calculations with the formula.
Measure the earth's magnetic field and direction.
Links to Stage 6 Physics Syllabus Content:
Use magnetic field lines to model qualitatively the direction and strength of magnetic fields produced by magnets, current-carrying wires and solenoids and relate these fields to their effect on magnetic materials that are placed within them. (ACSPH083)
Conduct investigations into and describe quantitatively the magnetic fields produced by wires and solenoids, including: (ACSPH106, ACSPH107)
Investigate and explain the process by which ferromagnetic materials become magnetised. (ACSPH083)
Apply models to represent qualitatively and describe quantitatively the features of magnetic fields.