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The electric charge is also called electricity. We can generate electricity to illuminate our cities or we can store it in a battery to transport it. 1_______. Copper is a good conductor so we use it in electric wires. 2_______.
A simple electric circuit includes a battery with chemical paste, a carbon rod, a wire and a light bulb. The chemical paste contains an excess of electrons so when you connect the two poles of the battery, the copper wire attracts electrons. 3_______. When they arrive at the filament inside the bulb, they produce heat and emit light. 4_______.
Electricity is a flow of electrons through a conductor
PVC, on the other hand, is a good insulator and we use it to cover copper wires
The electrons in the chemical paste repel the electrons in the carbon rod and make them flow through the copper wire
That is why we say that light is a photoelectric effect