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The bulb was connected to the cells in different ways 1. In which ways did the bulb light up? Why? 2. In which ways didn't the bulb light up? Why?
1. When a light bulb connects to an electrical power supply, an electrical current flows from one metal contact to the other. As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light.
2.A break in the filament of an electric bulb means a break in the path of the current between the terminals of the electric cell. Therefore, a fused bulb does not light up as no current passes through its filament.
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