Re: [Phys-l] cars and physics

[Bernard Cleyet <bernardcleyet@redshift.com>]

Until my auto tool kit disappeared, I had two non-insertion DC ammeters.  One +/- ~ 30A and tother 200?
 I compared them to an insertion one (d'Arsonval w/ shunt and found them w/in ~ 1/4 the ticks.  e.g. not bad.  w/ such the students can do the measurements!   

bc thinks obvious why the Auto Store had these two.


On 2011, Feb 20, , at 14:03, Anthony Lapinski wrote:

> I'll be teaching electricity in the coming weeks. Wanted to do some basic
> math problems involving the electrical system of an automobile with a 12-V
> battery. Does anyone know the power (or current) of car devices, or a web
> site that would have this information?
>
> radio
> low beams (50 W?)
> high beams (60 W?)
> heater
> air conditioner
> rear window defroster (72 W?)
> cigarette lighter
>
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