Now let’s see how temperature affects the resistance of copper wire. A length of 18 gauge copper wire with a diameter of 1.02 mm and a cross-sectional area of 8.20×10−7 m2 has a resistance of 1.02 Ω at a temperature of 20 ∘C. Find the resistance at 0 ∘C and at 100 ∘C. The temperature coefficient of resistivity of copper is 0.0039 (C∘)−1. On a hot summer day in Death Valley, the resistance is 1.15 Ω. What is the temperature?
Resistance of given wire at ,
Coefficient of resistivity,
Use formula
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Find the resistance at
ANSWER :
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Find the resistance at
ANSWER :
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On a hot summer day in Death Valley, the resistance is 1.15 Ω. What is the temperature?
Find the temperature when resistance,
ANSWER:
=========================
Resistance of given wire at ,
Coefficient of resistivity,
Use formula
-----------
Find the resistance at
ANSWER :
=========================
Find the resistance at
ANSWER :
=========================
On a hot summer day in Death Valley, the resistance is 1.15 Ω. What is the temperature?
Find the temperature when resistance,
ANSWER:
=========================
Now let’s see how temperature affects the resistance of copper wire. A length of 18 gauge...
spus Calculate the resistance of the gauge 12 wire at 100°C (cross-section area of 3.31mm). The resistivity of copper at 20°C is 1.68-10 m and temperature coefficient of resistivity is 0.0039°C in a significant fugure
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