Finding Resistors Currents with Changing Resistance

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SUMMARY

The discussion focuses on calculating currents through resistors in a circuit with a 23 V battery and varying resistance values. The participants analyze a circuit comprising a 12 Ω resistor in series with a parallel combination of 55 Ω and 95 Ω resistors. The correct approach involves calculating the equivalent resistance (Req) of the parallel resistors first, followed by applying Ohm's Law (I = V/R) to find the current through each resistor. As resistance increases, the current through the 12 Ω resistor decreases, while the currents through the 55 Ω and 95 Ω resistors also change based on the new equivalent resistance.

PREREQUISITES
  • Understanding of Ohm's Law (I = V/R)
  • Knowledge of series and parallel resistor configurations
  • Ability to calculate equivalent resistance for resistors in series and parallel
  • Familiarity with basic circuit analysis techniques
NEXT STEPS
  • Study the calculation of equivalent resistance for multiple resistors in series and parallel.
  • Learn how to apply Kirchhoff's laws for circuit analysis.
  • Explore the impact of varying resistance on current flow in circuits.
  • Practice solving complex circuit problems involving multiple resistors and voltage sources.
USEFUL FOR

Electrical engineering students, hobbyists working on circuit design, and anyone interested in understanding resistor behavior in electrical circuits.

  • #31
Bump! Is anyone able to determine if I am correct or not? Thanks.
 
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  • #32
Hmm..I change my answer, so that when R increases, Req decreases. As for the other two...I say that the 12 ohm resistor would increase, and the 55 ohm resistor would decrease, is this correct?
 
  • #33
Is anybody able to help me complete this problem? I would like to finish this possibly today. Thanks.
 

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