Voltage
2008-07-05 9:31 pm
If a circuit is closed, and a light bulb is placed in the circuit and therefore consuming the energy carried by the travelling electric charges, what happens if all the energy in a E charge is consumed? Will the charges stop in motion? Will there be any current? Since the energy carried by them is the energy needed for them to move away to complete the chemical reaction within the battery. THanks!!
回答 (1)
2008-07-06 8:50 am
✔ 最佳答案
Q: what happens if all the energy in a E charge is consumed? A: This would not happen, as energy is constantly supplied to the moving electrons from the electric field set up in the circuit by the voltage of the battery.
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Q: Will the charges stop in motion?
A: No, this could never happen. See answer to the above question.
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Q: Will there be any current?
Yes, as electrons are in constant motion, there is a constant current in the circuit.
The energy of the electrons are derived from the electric field in the circuit, which is caused by the voltage of the battery that, in turn, derives its energy from the chemcial reaction taking place inside the battery.
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