=20

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Lindy Mayfield
Sent: Tuesday, October 22, 2013 12:53 PM
To: Microcontroller discussion list - Public.
Subject: RE: [OT] Thought experiment: Understanding volts vs amps

Thanks.  This brings me closer.  If my 9v battery (the  standard one that
fits into electronic devices) could provide enough "energy" to run a car,
could I still plug it into my radio alarm clock without changing any of the
circuitry (given that it requires 9 volts)? =20

=3D=3DYES

I believe what I have heard is yes, given perfect conditions.  I assume tha=
t
the standard 9v battery tongue test wouldn't be wise in that case.  :-)

=3D=3DNo less wise than with a standard 9V battery. Your resistance would l=
imit
the current to the same value as with the standard battery. (Note that some
say the tongue test is dangerous with a regular battery).


This is helping me understand the role of resistors in a circuit. =20

Lindy


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