An assembly supports a coil so that it can be easily slide up and down a support tube and locked in position
When a small cylindrical magnet (supplied) is dropped down the tube, the resultant induced EMF can be monitored with an oscilloscope or data‐logger
The amplitude varies with speed and this provides the basis for a student investigation into the relationship between distance fallen by the magnet and the output amplitude
At post‐16, equations of motion can be used to determine the speed and if a PC storage oscilloscope is available, there is scope for investigation of output characteristics
