School of Physics Lecture Demonstration Manual

Eb-7 Light Globe Under Water

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

Aim

To demonstrate induced emf.

Apparatus

Diagrams

Click on pictures to enlarge.

Light Globe Under Water

Light Globe Underwater Diagram

Videos

Light Globe Under Water

Description

The apparatus consists of a waxed coil connected to a 6 Volt torch globe. The coil may be submerged in a beaker of water and placed upon the protruding core of the electromagnet.

The variac voltage is increased and the globe lights. Do not apply more than 115 volts A.C.

Safety notes

Electrical safety 

Sharps Safety 

Maintenance 

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