[Lab] Odd Question

Micro micro222 at yahoo.com
Fri Jan 20 21:05:08 EST 2012

I tried a few resistors and found that took 15 ohms to drop the voltage to 6 volts. That works out to 400 milliamps and most importantly 2.4 Watts.

The temperature will mostly depend on how many Watts and how much surface area there is to be able to cool it off. To give you a rough idea, take a look at this 3 Watt resistor. 


At that size it can usually get rid of enough heat to keep it from getting more than very warm. If the material you're heating is much bigger than that, it should also be much cooler.

--- On Fri, 1/20/12, Emily Daniels <emily.daniels at gmail.com> wrote:

From: Emily Daniels <emily.daniels at gmail.com>
Subject: [Lab] Odd Question
To: "lab" <lab at artengine.ca>
Received: Friday, January 20, 2012, 1:33 PM

Hi All,
Does anyone know how much heat is produced by a 9 volt battery when the resistance of the material it flows through reduces it to 6 volts? What would the temperature be inside the material? Thanks!

Emily Daniels | emilydaniels.com | @emdaniels | awesomefoundation.org

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