Really confused about voltage and some other quetions

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SUMMARY

This discussion clarifies fundamental concepts of voltage, current, and resistance in electrical circuits. Voltage is defined as the energy required by electrostatic forces to move charge between two points, referred to as potential difference due to the difference in potential energy. Current magnitude relates to the number of electrons flowing rather than their speed, and resistance of zero does not imply the absence of voltage. The source of voltage is considered to have a potential of zero, serving as a reference point for other elements in the circuit.

PREREQUISITES
  • Basic understanding of electrical concepts such as voltage, current, and resistance
  • Familiarity with Ohm's Law (V = I * R)
  • Knowledge of electrostatic forces and potential energy
  • Understanding of charge flow in conductive materials
NEXT STEPS
  • Study the relationship between voltage and potential energy in circuits
  • Learn about the behavior of electrons in conductive materials
  • Explore the implications of zero resistance in electrical circuits
  • Investigate the concept of electric potential and its reference points
USEFUL FOR

This discussion is beneficial for students and enthusiasts in physics, electrical engineering, and anyone seeking to understand the principles of voltage, current, and resistance in circuits.

Logical Dog
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Please explain how or why (I have zero knowledge in physics)..

1. is Voltage the energy required by the elctrostatic forces between 2 points to move a certain quantity of charge between them?

2. Why is it called potential difference? Does this have to do with the difference in potential energy between two regions of opposite net charges? Why? In mechanics as I learned potential energy is the energy an object has due to its shape or position (change in PE= Change in H * G*M), what does this mean in a circuit?

3. Current, when the current is of a higher magnitude, do the electrons flow faster within a certain imaginary plane at a given time or just that there are are more electrons? does the speed of current vary in a circuits?

4. If resistance in a circuit is zero, does this mean there can not be any voltage? V = I * R and the multiplicative property of 0. Or is it not possible to not have 0 resistance?

5. What is meant by thsi statement "IN engineering the current direction describes the net positive flow"?

6. Is thE " WORK DONE" to move one charge to another region of net opposite charge given by multiplying the ([Q1*Q2/R^2]*k)* distance between the charges? what does this have to do with voltage?
 
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7. Why is the source of voltage always having a voltage of 0, is this because it is the "lowest" point much like an object on a ground has 0 potential energy? because distance between charges is very little at the source, but they have to travel through a wire or other medium, so why is voltage 0 for the source and this is the standard for comparision for other elements.
 
9. If electrons don't have the speed everywhere in the circuit, doesen't it mean their KINETIC ENERGY is changing and the work done by electrostatic forces increases? this would increase the voltage, yes?

"A difference in electrical charge between two regions and a medium between them to allow flow of electrons is enough to establish a current, a creation of voltage leads to a flow of current" is a correct statement?
 
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