Thermistor's temperature problem

[matt_crouch]

Homework Statement

A thermistor's temperature dependence is given by R=R₀e^b/t
where R is in ohms T is in Kelvins R₀ and B are constants to be found.

a) If R =7360 at the ice point and 153 at steam point find R₀ and B

Homework Equations

The Attempt at a Solution

I took logs so

LnR=R₀B/T
rearranged so
(LnR)T/B=R₀

then get simultaneous equations but the constant i am trying to find so for this example B are just going to cancel?

(Ln153)x373.15/B = (Ln7360)x273.15/B

Thanks in advance

 

[OmCheeto]

Homework Statement

A thermistor's temperature dependence is given by R=R₀e^b/t
where R is in ohms T is in Kelvins R₀ and B are constants to be found.

a) If R =7360 at the ice point and 153 at steam point find R₀ and B

Homework Equations

The Attempt at a Solution

I took logs so

LnR=R₀B/T

Shouldn't that be LnR=LnR₀ + B/T ?