Register to reply

Temperature vs. Resistance

by sharpnova
Tags: resistance, temperature
Share this thread:
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?
Phys.Org News Partner Science news on Phys.org
New type of solar concentrator desn't block the view
Researchers demonstrate ultra low-field nuclear magnetic resonance using Earth's magnetic field
Asian inventions dominate energy storage systems
Astronuc
#2
Jul1-07, 05:21 AM
Admin
Astronuc's Avatar
P: 21,865
The relevant equation is correct.

The answer is correct for the given inputs.


Register to reply

Related Discussions
Resistance versus Temperature Introductory Physics Homework 3
Changes in Resistance due to Temperature Introductory Physics Homework 1
Resistance vs. Temperature, etc. Introductory Physics Homework 5
Resistance and temperature. Introductory Physics Homework 4
Resistance and Temperature General Physics 4