Calculate voltage drop for a circuit

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SUMMARY

The discussion focuses on calculating voltage drop in a circuit using Ohm's Law (V=IR) and applying Kirchhoff's Current Law. Participants clarify that a 10 Ohm resistor cannot be ignored unless it is in parallel with a short circuit. The key takeaway is the importance of analyzing voltage drops before applying Kirchhoff's laws to solve for current in scenarios where resistance approaches zero.

PREREQUISITES
  • Understanding of Ohm's Law (V=IR)
  • Familiarity with Kirchhoff's Current Law
  • Basic circuit analysis techniques
  • Knowledge of series and parallel resistor configurations
NEXT STEPS
  • Study advanced applications of Kirchhoff's Current Law in complex circuits
  • Learn about series and parallel resistor combinations in detail
  • Explore practical examples of voltage drop calculations in real circuits
  • Investigate the implications of short circuits in electrical systems
USEFUL FOR

Electrical engineering students, circuit designers, and anyone involved in practical electronics who needs to understand voltage drop calculations and circuit analysis.

the-alchemist
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Homework Statement



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Homework Equations



V=IR (Ohm's Law)

The Attempt at a Solution



Now I'm able to get V=0 for when R=0 but I'm not sure as to how to solve for I when R=0. Can I ignore the 10 Ohm resistor as it's a short circuit as R=0.
 
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the-alchemist said:
Now I'm able to get V=0 for when R=0 but I'm not sure as to how to solve for I when R=0. Can I ignore the 10 Ohm resistor as it's a short circuit as R=0.
No, you would only be able to ignore the 10-ohm resistor if it were in parallel with the short circuit.

What you want to do is apply Kirchoff's current law to the node a or b. To do that, though, you'll first want to find the voltage drops in the circuit.
 

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