In this study, the theoretical resistance of silver coated conductive yarn which occurs through physical stimuli applied during weaving and clothing making processes was investigated and compared to experimental resistance. Resistance change of silver coated conductive yarn was also analyzed. The theoretical resistance suggested in previous studies is different to the experimental resistance in this study. It was confirmed that, as strain increases, resistance by splitting and separation of the silver coating particles increases and as the contact area among filaments increases, resistance decreases. Influential factors for separation of silver coating particles and contact factors were expressed as equations. Based on these equations, a final equation was derived and it was confirmed that theoretical resistance and experimental resistance have similar increasing tendency. Therefore, resistance change according to length increases of silver coated nylon 6.6 in each strain interval is predictable.