Electronics Reference
Electricity
n - Shell number
The current per cross-sectional area.
R - Total Resistance (Ω)
ρ - The specific resistance or resistivity of the conductor in Ω-cm or Ω-m
l - The length in cm or m
A - The cross-sectional area cm2 or m2
Temperature Effect:
ΔR - Change in resistance due to change in temperature
R1 - Resistance at temperature T1
R2 - Resistance at temperature T2
T1 - Initial temperature
T2 - Final temperature
α - Resistance temperature coefficient