Wednesday, August 12, 2009

Batteries - external voltage

A quick aside on batteries - we will return to inductance tomorrow.

This from Wikibooks:

Vexternal = E - Vinternal

Since V = IR:

Vexternal = E - IRinternal

You may also need to use the following formula to work out the external potential difference, if you are not given it:

Vexternal = IΣRexternal

You should also remember the effects of using resistors in both series and parallel circuits.


The reason I'm posting this here is to remind me to learn it !!
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1 comment:

  1. UnknownAugust 23, 2009 at 5:11 PM

    Finally!
    A blog worth reading on forward until the end! :) I really admire the wording in this blog, quite precise to the details but I just might change one or two things, never-the-less, bravo on well choiced words mate.. p.s.>> Thanks for sharing, I actually picked up some knowledge on this one :)
    -Have an amazing day!
    Toshiba Laptop Batteries

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