Author Question: The temperature coefficient of resistivity for copper is 0.0068C-1. If a copper wire has a ... (Read 173 times)

SGallaher96 · **on:** Jul 29, 2018

The temperature coefficient of resistivity for copper is 0.0068C-1. If a copper wire has a resistance of 104 at 20C, what is its resistance 80C?

A)

192
B)

42
C)

71
D)

161
E)

146

Question 2

As the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor

A)

approaches zero.
B)

approaches infinity.
C)

approaches unity.
D)

none of the given answers