Measuring Static Resistance of Current/Voltage Graph

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SUMMARY

Measuring static resistance from a current/voltage graph involves calculating the ratio of voltage to current. For linear graphs, static and dynamic resistance are equivalent, as the slope remains constant. In contrast, for curved graphs, static resistance is determined by taking the absolute values of voltage and current, while dynamic resistance is calculated using small increments in voltage and current. This distinction is crucial for accurate electrical analysis.

PREREQUISITES
  • Understanding of Ohm's Law
  • Familiarity with current/voltage graphs
  • Knowledge of static vs. dynamic resistance
  • Basic calculus for small increments
NEXT STEPS
  • Research methods for analyzing linear vs. nonlinear current/voltage relationships
  • Learn about dynamic impedance calculations in electrical circuits
  • Explore practical applications of static resistance in circuit design
  • Study the impact of temperature on resistance measurements
USEFUL FOR

Electrical engineers, physics students, and anyone involved in circuit analysis or design will benefit from this discussion on measuring static resistance in current/voltage graphs.

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Hi, how do i measure the statics resistance of a current/voltage graph and not the dynamic resistance?

thanks!
 
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If you have a straight line graph, they are the same. You just take the voltage at any point and divide it by the current.

If the graph is curved, you can take a small increment in voltage and divide that by a corresponding small change in current. This gives you the dynamic impedance.

At the same point you could just take the absolute value of the voltage and divide it by the absolute value of the current and get the resistance. This is the static resistance.
 

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