Is voltage the same in parallel circuits with different resistance values?

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SUMMARY

In parallel circuits, the voltage across each branch remains constant and equal (Vt=V1=V2=V3) regardless of the resistance values. This principle holds true irrespective of whether the resistors have the same or different resistance values. The confusion arises from the relationship between voltage, current, and resistance as described by Ohm's Law (V=IR), which indicates that while current varies with resistance, voltage does not. Therefore, the voltage remains the same across all branches in a parallel circuit.

PREREQUISITES
  • Understanding of Ohm's Law (V=IR)
  • Basic knowledge of electrical circuits
  • Familiarity with parallel circuit configurations
  • Concept of resistance and its impact on current flow
NEXT STEPS
  • Study the implications of Kirchhoff's Voltage Law in parallel circuits
  • Explore the effects of varying resistance values on current distribution
  • Learn about series vs. parallel circuits and their characteristics
  • Investigate practical applications of parallel circuits in electrical engineering
USEFUL FOR

Students studying electrical engineering, educators teaching circuit theory, and hobbyists interested in electronics who want to deepen their understanding of voltage behavior in parallel circuits.

Daniel2244
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Homework Statement


I have to write about voltage within a parallel circuit and the formula for voltage in parallel is Vt=V1=V2=V3. But I was wondering if that's only the case if the resistors have the same resistance becasue I used resistors with different values

Homework Equations


V1=V2=V3

The Attempt at a Solution


The answer is yes the voltage across each branch is the same only when the resistors are the same value. Becasue when you use resistors with higher/lower resistance the current flow is different. (higher Ω Lower I) so using Ohm's law V=IR the voltage will be different if resistors with different values are used in parallel.
 
Last edited:
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Daniel2244 said:

Homework Statement


I have to write about voltage within a parallel circuit and the formula for voltage in parallel is V1=V2=V3. But I was wondering if that's only the case if the resistors have the same resistance becasue I used resistors with different values

Homework Equations


V1=V2=V3

The Attempt at a Solution


The answer is yes the voltage across each branch is the same only when the resistors are the same value. Becasue when you use resistors with higher/lower resistance the current flow is different. (higher Ω Lower I) so using Ohm's law V=IR the voltage will be different if resistors with different values are used in parallel.
This is completely incorrect. See if you can figure out why
 
phinds said:
This is completely incorrect. See if you can figure out why
WOW!. My bad, I calculates something wrong. Vt=V1=V2=Vn...
 
Last edited:

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