Recent content by Tiger

Yes. I got that. The velocity they randomly move around is very fast but the drift velocity as current is much lower，which is related to the voltage in the circuit. Thank you guys. Merry Christmas and Happy New Year.

Thanks. Vanhees71. I got the poit now. The higher the voltage, the faster the electrons move. Thank you

Hi, Vanhees71. Thanks for your answer. A bit difficult for me to understand exactly. Can you simplify and tell me what is the difference between the 2 scenarios. A - Everything same but low voltage B everything same but high voltage. I mean in the charging circuit as the diagram. What is...

Thanks. Vanhees71. So when I increase the power source voltage, there will be bigger electromagnetic field in the wire so it can push more electrons moving per unit time - a bigger current as a result. In that case should I say when voltage is not big, only a certain percentage of electrons...

Thanks guys for all the discussion. I understand now the drifting velocity is the actual motion speed of electrons in a copper wire in a DC circuit. Water flow analogy is not right. Misleading. Now I am thinking a lithium battery circuit as below. So when power source is ON, electrons start...

Thanks for your reply.Perok and Mitochan. Below is from the link Perok sent. It says clearly electron is moving in the DC circuit. Very good. My quetions is, what is the speed, roughly? The moving speed of electrons, with negative charge. If the poles of a voltage source are joined by...

Thanks. Perok. Okay let's talk about all the electrons in the copper wire in a DC circuit. Are they moving in the circuit one loop after another loop? I want to understand how they move in a DC circuit. Electric current speed is light speed that is for sure. I learned electrons are moving in...

Thank you. Perok. I posted a question. Can you please check if you can help. Thanks

I have been thinking of the nature of the electric current , or the motion of electrons in a copper cable of a closed DC circuit. Recently I learned the speed of electron is very slow in the copper cable and in a AC circuit the FREE ELECTRONS are in fact moving back and forth. But in a DC...

Hello Everyone. This is Tiger from China. I am an control engineer working in power storage system and servo motor system. Recently I was obsessed by the nature of electric current and want to find people for discussing and Google lead me to PF.