Trouble with circuit calculations

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SUMMARY

The discussion focuses on solving circuit calculations involving Ohm's Law and Kirchhoff's Laws for a given circuit diagram. The user is struggling to fill out a table related to the circuit's voltage and current values. Key equations mentioned include Ohm's Law (V=IR) and the rules for calculating equivalent resistance in series and parallel circuits. The suggestion to simplify the parallel combination of resistors R2 and R3 into a single equivalent resistor is a critical step in finding the solution.

PREREQUISITES
  • Understanding of Ohm's Law (V=IR)
  • Knowledge of series and parallel circuit configurations
  • Familiarity with Kirchhoff's Laws
  • Basic circuit analysis techniques
NEXT STEPS
  • Study the application of Ohm's Law in circuit analysis
  • Learn how to calculate equivalent resistance in series and parallel circuits
  • Explore Kirchhoff's Voltage and Current Laws in detail
  • Practice circuit problems involving multiple resistors and voltage sources
USEFUL FOR

Students studying electrical engineering, physics enthusiasts, and anyone seeking to improve their skills in circuit analysis and problem-solving.

stu12345
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Homework Statement


I uploaded a picture of the circuit diagram I'm using. Basically I'm having trouble with filling out the rest of the table.

Homework Equations



Ohm's law:
V=IR
series circuit: R(eq)= R1 + R2 + R3...
parallel circuit: 1/R(eq)=1/R1 + 1/R2 + 1/R3 ...

Kirchhoff's Law:

series circuit: the source current equals the current through each load.
series circuit: the source voltage equals the sum of the voltages across each of the loads

parallel circiut: the source current equals the sum of the currents through the loads.
parallel circuit: the source voltage equals the voltage across each load.

The Attempt at a Solution



The attempt of the solution can be found in the picture I uploaded. Any help is much appreciated.

Please I really need help.
 

Attachments

  • ohmspics.jpg
    ohmspics.jpg
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Last edited:
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You've calculated the current through R1, so what does Ohm's law tell you about the voltage drop across R1?

[Edit: Oh, and by the way, welcome to Physics Forums!]
 
Last edited:
It may help you to think of the parallel combination of R2 and R3 as a single 6 ohm resistor, R4. Then, you would have an equivalent circuit that is purely series-connected.

What, then, is the current through R1 and R4?
 

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