lead battery - Physics Banter

A Physics forum. Physics Banter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

		Home » Physics Banter forum » Physics Newsgroups » Physics - General Discussion
lead battery

Mark Forums Read

Tags: battery, lead

lead battery

« layman question about Si-Ge | General Information About (p-branes) In String Theories »

#1

Old

July 7th 03 posted to sci.physics,sci.physics.cond-matter,sci.physics.electromag,sci.chem

bill9north@hotmail.com

external usenet poster

Posts: 32

Default

lead battery

(Lasse) wrote

Hi all! I've been told that the lead battery is a nonlinear
source. That must mean that it doesn't obet to
Ohms law. Correct ?

No.

Example for the above question: I have a 12V battery, and
I have a resistor of 1000 ohms connected to it. I should
expect that the current in my circuit becomes:
12/1000=0.012 A. Does it ?

Add in the battery's internal resistance and then work the problem.
At higher currents the battery temperature will rise along
with the internal resistance.

If not, what will the voltage over the resistor(an ohmic device) be?
Say that the lead battery injects 1Amp in the resistor.
According to Ohms law, the voltage over the resistor becomes:
U=R*I=1000*1=1000V. But it is connected to a 12V source!
Who wins(which voltage will be measured) ?
And why ?

Get an elementary electrical circuits book as it appears that's
what you need to study before you can begin to ask reasonable
questions.

Report this post as spam, offensive or inappropriate

Reply With Quote

Ads

#2

Old

July 8th 03 posted to sci.physics,sci.physics.cond-matter,sci.physics.electromag,sci.chem

Lasse

external usenet poster

Posts: 27

Default

lead battery

wrote in message Get an elementary electrical circuits book as it appears that's
what you need to study before you can begin to ask reasonable
questions.

Well my concerns are a little bit more delicate than an elementary
electrical circuits book can answer.
According to elementary circuit theory you cannot have
current without an applied voltage. But what about transport of charge
through convection ...?

Does convection apply to Ohms law ? As an electrical engineer
I have problem answering that question. With the insufficent knowledge
that I have in chemistry, I suspect(ed) that the lead battery can show
current source behaviour.

Regards,
Lasse Karagiannis

Report this post as spam, offensive or inappropriate

Reply With Quote

#3

Old

July 8th 03 posted to sci.physics,sci.physics.cond-matter,sci.physics.electromag,sci.chem

Joseph.D.Warner

external usenet poster

Posts: 180

Default

lead battery

Lasse wrote:
wrote in message Get an elementary electrical circuits book as it appears that's

what you need to study before you can begin to ask reasonable
questions.

Well my concerns are a little bit more delicate than an elementary
electrical circuits book can answer.
According to elementary circuit theory you cannot have
current without an applied voltage. But what about transport of charge
through convection ...?

Does convection apply to Ohms law ? As an electrical engineer
I have problem answering that question. With the insufficent knowledge
that I have in chemistry, I suspect(ed) that the lead battery can show
current source behaviour.

Go back to your book on tubes especially photo detectors similar
equations will apply.

A battery will have a space charge density around each electrode. The
potential difference is of course the difference between the half-cell
voltages. Now you need to throw in a transport equation through the acid
for when there is a current and a chemical or ion density gradient.
You can assume some time of mobility of the ions. This is where the
non-linearity comes from as the mobility is not constant with current.

I am sure if you ask someone at Everyready they will give you paper on
it or look in the Electrochemical Journal.

Report this post as spam, offensive or inappropriate

Reply With Quote

« Previous Thread | Next Thread »

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
how battery works	Rick Giuly	Physics - General Discussion	3	July 8th 03 07:01 PM
lead battery	John Popelish	Physics - General Discussion	0	July 7th 03 06:03 AM

All times are GMT +1. The time now is 09:09 PM.