- #1
Red_CCF
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1. I understand that conventional current is opposite of electron movement. What I don't get is why we still use this; I've read several websites that just says that it doesn't affect anything without going into more detail.
2. I've never really grasped the concept of voltage. I don't like the analogy that compares voltage to water pressure because I tend to believe pressure as a force whereas voltage is energy related (correct me if I'm wrong). I don't really understand the term potential difference that is used with voltage; what is it a difference of? why is the word potential used when the voltage is related to giving electrons kinetic energy?
3. This question is related to voltage as well. The positive and negative terminals on a DC circuit (a battery for instance) has me confused because if voltage is energy (a scalar quantity) related, how can one side be positive and the other be negative?
4. When electrons are pushed through a resistor, voltage is used up; but if let's say a 9V light bulb is placed on a 9V DC circuit, after the electrons move through the resistor and the voltage is used up, how does the electrons continue moving to the terminals?
5. Another voltage related concept that I don't understand is the negative voltage on AC circuits. How does that work and how come a load can still function with a negative voltage on an AC circuit but not a DC circuit with set positive and negative terminals?
Please correct me if I have any misconceptions in my questions above. I'm going into engineering and I really need to grasp these basic electricity principles.
Thanks for any help that you can provide
2. I've never really grasped the concept of voltage. I don't like the analogy that compares voltage to water pressure because I tend to believe pressure as a force whereas voltage is energy related (correct me if I'm wrong). I don't really understand the term potential difference that is used with voltage; what is it a difference of? why is the word potential used when the voltage is related to giving electrons kinetic energy?
3. This question is related to voltage as well. The positive and negative terminals on a DC circuit (a battery for instance) has me confused because if voltage is energy (a scalar quantity) related, how can one side be positive and the other be negative?
4. When electrons are pushed through a resistor, voltage is used up; but if let's say a 9V light bulb is placed on a 9V DC circuit, after the electrons move through the resistor and the voltage is used up, how does the electrons continue moving to the terminals?
5. Another voltage related concept that I don't understand is the negative voltage on AC circuits. How does that work and how come a load can still function with a negative voltage on an AC circuit but not a DC circuit with set positive and negative terminals?
Please correct me if I have any misconceptions in my questions above. I'm going into engineering and I really need to grasp these basic electricity principles.
Thanks for any help that you can provide