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Re: Battery power



Forum for Physics Educators <PHYS-L@lists.nau.edu> writes:
I'm helping one on of my students measure the power output of a battery.
We
load the battery with a 10 ohm resistor across its terminals and measure
the
current through the resistor and the voltage across the resistor. This
works
fine for the AA, AAA, C, and D size batteries. But the button cell
batteries, for watches, give a decaying current. Any ideas as to how I can
alter my measurement method to get a steady current from the button cell
batteries?

More resistance?



Pete Lohstreter "Happy is he who gets to know
The Hockaday School the reasons for things. "
11600 Welch Rd Virgil (70-19 BCE) Roman poet.
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plohstreter@mail.hockaday.org

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