Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2RCord + VCord/Cable 114V = 12A x 2RCord + 111V RCord = 0.125 Ω The measured RCord is 45% greater than what we initially calculated. The increased resistance value could be due to the rising temperature of the wire when it conducts current. As the wire heats up (due to Joule heating), electrons undergo more collisions, causing the resistance of the wire to also increase. For copper, this causes a resistance increase of about 0.4% per Kelvin. In addition, the connection between the plug and the receptacle is not perfect, and introduces some contact resistance. To find RCube, we have: VSupply = I x (2RCube + 2RCord + 2RCable + RCar) =...
View Full Document

This note was uploaded on 06/25/2013 for the course ECE 100 taught by Professor Pister during the Spring '13 term at University of California, Berkeley.

Ask a homework question - tutors are online