Parallel Circuit Voltage Calculation: Solving for Voltages using Ohm's Law

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SUMMARY

The discussion focuses on calculating voltages in a parallel circuit using Ohm's Law, specifically the formula V=IR. Participants clarify that in a parallel circuit, the voltage across each component remains constant. The user initially attempted to calculate voltage by multiplying current (5A) by resistance (3 Ohms), but was guided to consider the current through other resistors as well. Ultimately, the correct voltage calculated was 4.8V, with a current of 1.6A through the 3 Ohm resistor, confirming the solution's accuracy.

PREREQUISITES
  • Understanding of Ohm's Law (V=IR)
  • Knowledge of parallel circuit characteristics
  • Familiarity with calculating total current in parallel circuits
  • Ability to interpret circuit diagrams and problem statements
NEXT STEPS
  • Study the implications of Kirchhoff's Current Law in parallel circuits
  • Learn how to analyze complex circuits using mesh and nodal analysis
  • Explore the effects of varying resistance values on voltage and current in parallel circuits
  • Practice solving circuit problems using simulation tools like LTspice or Multisim
USEFUL FOR

Students studying electrical engineering, educators teaching circuit analysis, and anyone seeking to deepen their understanding of parallel circuit behavior and voltage calculations.

saulwizard1
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Homework Statement


Solve the next circuit to find the voltages

Homework Equations


I=V/R
GT=(1/R1)+(1/Rn)
V=V1=V2=V3

The Attempt at a Solution


My background is that I know that in a parallel circuit, the voltage for each component is the same and electric current it's equal to the sum of the electric currents of each one of the resistances by separate. My first and only attempt was to multiply the 5A by 3 ohms.
 

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Your problem statement is not clear or complete. What do you mean by "Solve the next circuit"? Solve for what? Please make an effort to provide clear problem statements that can be readily understood by the Homework Helpers.

What was your motivation for multiplying 5A by 3 Ohms? What about the 1A source and the other resistor?

Hint: You are given a current through one of the resistors. Does that give you any useful voltage information?
 
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gneill said:
Your problem statement is not clear or complete. What do you mean by "Solve the next circuit"? Solve for what? Please make an effort to provide clear problem statements that can be readily understood by the Homework Helpers.

What was your motivation for multiplying 5A by 3 Ohms? What about the 1A source and the other resistor?

Hint: You are given a current through one of the resistors. Does that give you any useful voltage information?

According what I understand, the 2.4A would help me to get the voltage using Voltage=(current)(resistance), or in what way can it help me?
 
saulwizard1 said:
According what I understand, the 2.4A would help me to get the voltage using Voltage=(current)(resistance), or in what way can it help me?
Review your own Attempt at a solution content, the answer's there!
 
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gneill said:
Review your own Attempt at a solution content, the answer's there!
I made a procedure and I get that the voltage=4.8V and the current for the resistance of 3 Ohms it´s equal to 1.6A, am I right?
 
saulwizard1 said:
I made a procedure and I get that the voltage=4.8V and the current for the resistance of 3 Ohms it´s equal to 1.6A, am I right?
Looks good.
 
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gneill said:
Looks good.
If all it's Ok, I think that this exercise is solved, thanks for your help with this problem.
 

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