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Current in a hollow tube problem

  • #1
1. A 60.0 -cm-long hollow nichrome tube of inner diameter 1.10 mm, outer diameter 4.20 mm is connected to a 3.00 V battery. What is the current in the tube?


Homework Equations


Resistivity for nichrome = 1.5*10^-6 ohm meters
I=V/R
E=V/L


The Attempt at a Solution

 

Answers and Replies

  • #2
34
0
I don't know what parts you are having trouble with, but before you can use the equations you posted you have to find the Resistance with the formula R=rho*L/A your A will be pi*(outer radius - inner radius)^2. Then you can proceed.
 

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