School of Physics Lecture Demonstration Manual

Ea-7 The Solenoid

Published: Tuesday 14 March 2006 - Updated: Tuesday 29 March 2011

Aim

To demonstrate the magnetic field due to a solenoid.

Apparatus

Diagrams

Click on pictures to enlarge.

Solenoid Diagram

Description

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.

Safety notes

Electrical safety 

Maintenance 

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