An electrical cell consists of a single chemical potential energy system with a single positive and negative electrode.
Multiple cells are called a battery. A car battery has six cells. A flashlight usually has two to three cells. Although in everyday English we often say, "This flashlight has three batteries," in truth the flashlight has a single battery of three cells.
In electricity we often use abstract symbols to make drawing diagrams simpler. Some of the objects and symbols are shown below. The object is on the left, the symbol is to its right.
Note that bulbs are considered resistors (or resistances). Diagrams consisting only of symbols are called schematic diagrams.
Each group should have a cell, a bulb, and a wire. Use the cell and wire to light the bulb.
Questions to consider: Does it matter where on the bulb the wires or cell contact
the bulb in order to light up the bulb?
If the location of contact(s) matters, indicate the critical locations on the drawing on the right.
Obtain another cell and some more pieces of wire. Find as many arrangements of the cells, wires, and bulbs that cause the bulb to light as possible. Try using both cells.
Determine what materials conduct electricity by testing for conductivity with the cell, bulb, and wires. Label those that conduct electricity as a conductor and those that do not conduct electricity as an insulator.
Is the brightness of the bulb related to the ability of the material to conduct electricity? The relative ability to conduct electricity is termed conductivity. Rate the conductivity for the materials test.
Some materials will be provided, others can be found around the laboratory.
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