Calculate copper plate resistance

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SUMMARY

To calculate the resistance of a copper plate, use the resistivity formula R = ρL/A, where ρ is the resistivity in Ohm-meters, L is the length of the conductor, and A is the cross-sectional area. The surface area alone is insufficient; the calculation must consider the dimensions of the copper plate in the direction of current flow. For copper, the resistivity value is approximately 1.68 x 10^-8 Ohm-meters.

PREREQUISITES
  • Understanding of electrical resistance and Ohm's Law
  • Familiarity with resistivity and its units (Ohm-meters)
  • Basic knowledge of geometry for calculating area
  • Ability to interpret and use AWG (American Wire Gauge) charts
NEXT STEPS
  • Research the resistivity values of different materials for comparison
  • Learn about the impact of temperature on resistivity
  • Explore methods for measuring resistance in practical applications
  • Study the effects of thickness and surface area on resistance calculations
USEFUL FOR

Electrical engineers, physics students, and anyone involved in materials science or electrical circuit design will benefit from this discussion.

robhlee
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If I have a sheet of copper, how can i calculate its resistance? do i just take the surface area of the thin side and compare it on an AWG chart?
 
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It depends in which axis you want to do the calculation, but in all cases you would just use the resistivity formula:

[tex]R = \frac{\rho L}{A}[/tex]

Where [tex]\rho[/tex] is the resistivity in Ohm*meters

http://en.wikipedia.org/wiki/Electrical_resistance
 

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