Help understanding the Voltage in a circuit.

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SUMMARY

Voltage in a circuit is defined as the difference in electric potential between two points, measured in volts. In the context of a battery, a voltage of 4 volts indicates that electrons at the negative pole possess potential energy of 4*q, where q represents the charge of the electron. As electrons move towards the positive pole, their potential energy is converted into other forms of energy, illustrating the fundamental principles of electricity. Understanding these concepts is crucial for grasping the behavior of electrons and the functioning of electrical circuits.

PREREQUISITES
  • Basic understanding of electric potential and potential energy
  • Familiarity with Coulomb's law and charge
  • Knowledge of circuit components, specifically batteries and wires
  • Introductory concepts of electron behavior in physics
NEXT STEPS
  • Study the relationship between voltage, current, and resistance using Ohm's Law
  • Explore the concept of electric potential energy in more depth
  • Learn about circuit diagrams and how to represent voltage in them
  • Investigate the behavior of electrons in various materials, including conductors and insulators
USEFUL FOR

Students beginning their studies in electricity, educators teaching basic physics concepts, and anyone interested in understanding the fundamentals of electrical circuits.

GuidedByEmojis
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What is voltage in a circuit? We just started learning about electricity in my school. From what I understand; potential is potential energy per Coulomb and voltage means difference in potential. So, if you have a battery with 4 voltage and a wire connecting the poles of the battery, does that mean electrons at the negative pole will have a potential energy of 4∗q, where q is the charge of the electron? And when the electrons have reached the positive pole, all the potential energy will have been transformed?

I have a feeling I'm not understanding this concept.
 
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Hello guided one, welcome to PF :smile: !

For someone who is just being introduced to the subject, you are doing just fine ! And you choose your formulations carefully and -- as far as I can tell -- completely correct.

And a feeling of not completely understanding isn't all that bad. Nobody knows what an electron is, and no one has ever seen one :rolleyes: but we can describe the behaviour of electrons to an impressive degree of accuracy.
 

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