04-27-2014, 07:03 PM
Thermal coeff. of copper is about 0.4% per degree C. That is if you have 75 ohm at say 25C then at 36C (which is your body temp) it will become roughly 4% more that of 75 would be 3 ohms. So yes it is close and your hand will bring the resistance of 75 ohms close to 80.
