The temperature of a body is measured using the resistance of a wire. To calibrate the device the following measurements were taken (ohms is the unit of electrical resistance).


Resistance in melting ice 240 ohms.

Resistance in boiling water 250 ohms.

a. What is the change in resistance for a change in temperature of 1 Degree Celcius?

b. The wire is placed into some hot water and the resistance is mesured to be 246 ohms. What is the temperature of the water?