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Temperature vs. Resistance

by sharpnova
Tags: resistance, temperature
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sharpnova
#1
Jul1-07, 04:47 AM
P: 13
1. The problem statement, all variables and given/known data

At 30ąC, the resistance of a segment of gold wire is 79 ohms*.
When the wire is placed in a liquid bath,
the resistance increases to 165 *ohms.
The temperature coefficient is 0.0034/C at 20 degrees Celcius.
What is the temperature of the bath? An-
swer in units of C.

2. Relevant equations

Resistance = R(initial)[1+ alpha (T(final) - T(initial)]

3. The attempt at a solution

165 = 79 * ( 1 + .0034 * (T_final - 30) )

T_final = 350.1787


I'm submitting this and it's saying I'm wrong. Is the homework service in error?
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Astronuc
#2
Jul1-07, 05:21 AM
Admin
Astronuc's Avatar
P: 21,911
The relevant equation is correct.

The answer is correct for the given inputs.


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