voltage

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From: kevin kinsella (kkins@hotmail.com)
Date: Thu Dec 09 1999 - 09:07:15 PST 

Message-ID: <19991209170715.11744.qmail@hotmail.com>
From: "kevin kinsella" <kkins@hotmail.com>
Subject: voltage
Date: Thu, 09 Dec 1999 09:07:15 PST

This morning one of my 7th grade students came to me with a question about
electricity. Having skated through that portion of my physics classes with
my eyes closed, I'm at a loss for answering him.
        He wants to make a simple circuit tester like the ones we made in class
using batteries, wire and light bulbs. The problem is that he purchased a
120V bulb and two 1.5V "D" batteries. He can't get the bulb to light. Is it
possible to make this system light up and if so how many "D" cells will he
need??? What is voltage??? How does it relate to current and ???? whatever
else???
        On the recommendation of a colleague, I recently purchased a Radio Shak
book called 'Getting Started in Electronics' (or something close to that
title) and I gave that to my student to look over and begin reading. Any
help will be appreciated.

Thanks, Kevin K.

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