How
do electron's travel through a series circuit.
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Jonathon and Stephen were asked to formulate a hypothesis of how electrons move through a circuit. Both were shown a normal circuit with one globe and a battery and were asked to predict the effect of adding a second light to the circuit. | |
Jonathon predicted that one
light globe will glow brighter than the other. His reason for this is outlined
below. " As electrons are pushed out of the battery, with a certain amount of energy, they travel along the wire to the first light globe. There they encounter high resistance and give up some of their energy to the light globe. This energy is converted to heat and light. As the electrons pass through the second light the give up some of their remaining light to the second globe. The electrons that pass through the first light globe also pass through the second." |
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Stephen predicted that both light globes will glow at the same intensity but less bright than if one light globe was in the circuit. His reason for this is outlined below. " The wire is full of electrons. When the battery is connected all the electrons in the circuit experience the same force from the battery and have the same amount of energy given to them. Because two light globes in the circuit provide double the resistance, the flow of electrons is severely decreased. Since the flow of electrons is low the amount of energy that each light globe gets from the electrons is also low. |
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Construct the circuit and indicate who is right. |