1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Lenz,s Law in Automotive situation

  1. Apr 13, 2010 #1
    I kind of understand Lenz's law but was wondering if anyone could tell me were does lenz's law acutally occur in automotive electrical systems.?
  2. jcsd
  3. Apr 13, 2010 #2
    When a load is added, like turning on the windshield wipers, the alternator incurs a counter torque. In order to maintain the same vehicle speed, more fuel must be burned. The alternator output current results in a torque which opposes the torque from the engine through the belt. This is an example of Lenz' law. Induced quantities are oriented in an opposite direction to the original quantities, i.e. torque, flux, current/mmf, voltage/emf.

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook