Friday, January 29, 2016

Notes from Today - batteries and whatnot

https://phet.colorado.edu/en/simulation/circuit-construction-kit-dc

Play around with this.  If you can't get it to run (since it uses Java), maybe try it on a different browser - Firefox instead of Chrome.

You can build virtual circuits and basically see how they work.  The moving balls are supposed to represent electrons.

The battery is a source of voltage.  Recall that voltage is:

V = E/Q

- the amount of available energy per charge.  The unit is the joule per coulomb, also known as a volt (V).

It can be a little confusing that the symbol for voltage (V) is the same as the symbol for its units (V).  Hopefully the context will make it clear what the V is supposed to represent in data or an equation.

Battery image:



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