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Forums
Engineering
Electrical Engineering
Voltage source and current source
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[QUOTE="alan123hk, post: 6565602, member: 638884"] The charge flow must be driven by an electric field. The electric field is caused by the accumulated charge, and the accumulated charge is the voltage. Therefore, the conclusion is that voltage causes current. Voltage is the cause, current is the result. This seems reasonable. However, some people may ask, since the voltage is caused by the accumulated charge, the accumulated charge is first caused by the moving charge, so if there is no current, the voltage cannot be formed and maintained, so why can't it be said that the current is the cause and the voltage is result. To be honest, at the moment I am not sure which of these two opinions is correct. I do feel a little confused. I feel that this question is very similar to the question of whether there is a chicken or an egg first. This question is also a bit like when we ask when electromagnetic waves propagate energy, do electric fields appear first or magnetic fields appear first? So personally, until I find a more convincing and in-depth explanation from the perspective of physics, I dare not draw a conclusion on this issue for the time being. [/QUOTE]
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Engineering
Electrical Engineering
Voltage source and current source
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