Please Help!!!!! HI. Im really struggling to work out how to obtain the resistance of a ntc thermistor from just having the temperature. Ive been given the characteristic temp. of 3900K, labelled B for some reason. the only equation i can find to use is R = A.e to the power of B/T. I think this is somwthing to do with the base of natural logarithms, but when i asked my lecturer, he said no knowledge of logs was needed. Please help! Thank you loads in advance..