Series batteries PARTS AND MATERIALS Two 6-volt batteries One 9-volt battery Actually, any size batteries will suffice for this e...

Electron activity in chemical reactions So far in our discussions on electricity and electric circuits, we have not discussed in any det...

Battery construction Battery The word  battery  simply means a group of similar components. In military vocabulary, a "battery...

Battery ratings Coulomb   Unit, coulomb   Amp-hour   Battery capacity   Capacity, battery Because batteries create electron flow in a c...

Mercury Standard Cells Back in the early days of electrical measurement technology, a special type of battery known as a  mercury sta...

Solar Cell Another type of "battery" is the  solar cell , a by-product of the semiconductor revolution in electronics. The ...

Fuel Cell A fascinating device closely related to primary-cell batteries is the  fuel cell , so-called because it harnesses the chemi...

Practical considerations When connecting batteries together to form larger "banks" (a  battery  of batteries?), the constituen...

Simple series circuits Let's start with a series circuit consisting of three resistors and a single battery: The first principle...

Parallel batteries PARTS AND MATERIALS Four 6-volt batteries 12-volt light bulb, 25 or 50 watt Lamp socket High-wattage 12-volt l...