Electric potential anyone help

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SUMMARY

The discussion focuses on understanding the relationship between electric potential difference and its applications in both electrostatics and circuit theory. Key equations mentioned include the integration of electric field, expressed as dv = -E.dr, and Ohm's Law, V = IR. The user seeks clarity on how these concepts interrelate, particularly in measuring potential across resistors and capacitors. The Lorentz force is also referenced as a foundational concept in understanding electric fields.

PREREQUISITES
  • Understanding of electric potential and electric fields
  • Familiarity with Ohm's Law (V = IR)
  • Basic knowledge of circuit components like resistors and capacitors
  • Concept of the Lorentz force in electromagnetism
NEXT STEPS
  • Study the derivation of electric potential from electric fields using dv = -E.dr
  • Explore practical applications of Ohm's Law in circuit analysis
  • Learn about the Lorentz force and its implications in electric circuits
  • Investigate the behavior of potential difference in capacitors and their charging/discharging cycles
USEFUL FOR

Students of physics, electrical engineers, and anyone interested in deepening their understanding of electric potential and circuit theory.

ahmedhassan72
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Please anyone explain that to me as i cannot get it .How to link the potential difference which comes by integration dv=-E.dr like the potential inside and outside a charged sphere and the potential which comes by V=IR in our daily circuits how that comes i know that these are basics but i still want to understand and thanks in advance
 
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Hi ahmedhassan72! :smile:

there are often two ways of defining electric units :wink:

voltage = energy/charge = work/charge = force"dot"distance/charge = (from the Lorentz force) electric field"dot"distance, or dV = E.dr

but also voltage = energy/charge = (energy/time)/(charge/time) = power/current, or V = W/I :smile:
 
so how can i apply the dv=-E.dr in circuit to measure a potential across a resistor or capacitor to get to the v=IR ...also what is the lorents force...i got from u that if i have a stright line cylinderical wire and a battery then i can i measure by dv=-E.dr but for easiness i get it by v=IR
 

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