- #1

- 9

- 0

R = R0.e^B/T

T=absolute temperature

R=resistance

I have calculated ln(R) and 1/T but am unsure of how to calculate the coefficients. Any help would be greatly appreciated.

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter paulie walnut
- Start date

- #1

- 9

- 0

R = R0.e^B/T

T=absolute temperature

R=resistance

I have calculated ln(R) and 1/T but am unsure of how to calculate the coefficients. Any help would be greatly appreciated.

- #2

- 993

- 13

1st step is to take ln of both sides of the equation.

- #3

- 9

- 0

Hi grzz, how can I take the ln of both sides if B is unknown?

- #4

- 993

- 13

then

lnR = lnR[itex]_{o}[/itex] + B ([itex]\frac{1}{T}[/itex])

Compare with

y = c + mx

which is a straight line graph.

- #5

- 9

- 0

- #6

- 993

- 13

So one plots a graph of lnR on the vertical axis against 1/T on the horizontal axis and then the intercept on the R-axis will be .... and the slope of the graph will be ...

- #7

- 9

- 0

Ok good stuff. I know that the slope is equal to B. Is R0 then equal to the intercept?

- #8

- 993

- 13

Ro = intercept on the R-axis.

- #9

- 9

- 0

Thanks a million grzz!

Share: