2. A cylindrical copper cable 1.50 km long is connected across a 220-V potential difference. The resistivity of copper at room temperature (-293 K) is 1.72 x 10 m. a. What should be its diameter so that it produces heat (i.e. dissipates electrical energy) at a rate of 90.0 W? b. What is the electric field inside the cable under these conditions? c. What is the current flowing through the copper cable? d. If the temperature of the copper cable increases by 10 degrees, what is the new resistivity of the copper cable and what is the new rate at which it produces heat? Neglect the effect of changes in the cable's dimensions.
2. A cylindrical copper cable 1.50 km long is connected across a 220-V potential difference. The resistivity of copper at room temperature (-293 K) is 1.72 x 10 m. a. What should be its diameter so that it produces heat (i.e. dissipates electrical energy) at a rate of 90.0 W? b. What is the electric field inside the cable under these conditions? c. What is the current flowing through the copper cable? d. If the temperature of the copper cable increases by 10 degrees, what is the new resistivity of the copper cable and what is the new rate at which it produces heat? Neglect the effect of changes in the cable's dimensions.
Related questions
Question
Please answer c and d
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps