A cell produces a voltage by a chemical action. A combination of cells is a battery. If there are no chemicals left then the battery is dead. There .
There are two terminals in a battery. One is negative and the other is positive. The two terminals are connected to the machine to make a complete circuit. Then the machine will work. .
Now I will tell you about electric cars. "Electric cars are great .
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interests of the future"(Boltz, PG.29). They are quiet and give out no .
pollution. They are cheaper and easier to build than gasoline cars. The problem is that they need 100 volts to operate. They are very heavy and large. They take over an hour to recharge (that's if you only want to start it). To get its maximum mileage (60 miles) you would have to recharge it for 10 hours. .
There are six sources of electricity known today. They are: 1. Chemical action- batteries, 2 magnetism - generators, 3. Friction- static, 4 heat- thermo couple, 5 light- photo cell, 6 pressure- crystalis. .
If you connect batteries in a certain way they will change voltages. If you connect them in another way the will have the same voltage but last longer. I will explain to you those ways. When the cells are hooked up parallel +, +, + & so on you will have a voltage of one cell, but it will a voltage of one cell, but it will last longer if you do this. If you connect cells in a series of: +, -, +, - and so on the voltage will equal to: the number of .
cells times the voltage of each cell. Here are some extra facts that I think you would like to know. Batteries were used on the Apollo missions; there were 7 types of batteries used. If batteries get to heavy and expensive people .
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usually use generators instead.
Now I am going to tell you about the dry cell battery. These are the .
ones you would use in radios, C.D players, toys, flashlights, etc. I will first .
tell you the parts of a dry cell battery. There are 11 parts to a dry cell battery.