Potential Difference and Electromotive Force

Submitted by simonhcm on 17 February, 2006 - 2:09pm. Categories: Current Electricity | Files: Lesson Plans, Videos

The author gladly grants permission to anyone who wishes to reproduce the original works included in this lesson plan for non commercial purposes.

For those who are interested in why birds don't get electrocuted when they stand on the "live" conduit of the MRT tracks, here's the official reply from SMRT.

"There is an insulation material (PVC) covering the 3rd rail to prevent direct contact with the live 3rd rail. The PVC casing covers the top & vertical sides of the third rail. The bottom portion remains exposed for the current collector shoes of the train to slide along to draw traction current. The 3rd rail is supported at discrete intervals (approximately 6m apart) & held in place using 3rd rail insulators on arm brackets that are fastened to the track sleeper."