Ea-7 The Solenoid
Published: Tuesday 14 March 2006 - Updated: Tuesday 29 March 2011
To demonstrate the magnetic field due to a solenoid.
- 10 Amp Power Supply
- Iron Filings
- Overhead Projector
Click on pictures to enlarge.
The apparatus consists of a solenoid passing through a sheet of perspex. As the power supply voltage is increased to supply a current of 10 amps, iron filings are sprinkled over and around the solenoid. The magnetic field pattern is clearly displayed with the aid of the overhead projector.