Two conducting rods are made of the same material and have the same length. conductor b has a diameter twice that of conductor a but is hollow with an inner diameter of conductor a.
1. what is the resistance ratio ra/rb, measured between their ends?
2. if the temperature of a rod changes by 1.0 °c, what percentage changes in r, l, and a will occur?
3. what conclusion do you draw?

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

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where is the circuit diagram ?

talk back to him about the sport and show him your expertise or leave the room