Based on the table, if the temperature changes from 25°C to 65°C in a 105-m section of

Question:

Based on the table, if the temperature changes from 25°C to 65°C in a 105-m section of 9.5 × 10ˆ’3-m diameter wire, approximately how much will the wire's resistance change?
A. 0.04 Ω
B. 0.4 Ω
C. 4.0 Ω
D. 40 Ω
Electric power is generally transmitted to consumers by overhead wires. To reduce power loss due to heat, utility companies strive to reduce the magnitudes of both the current (I) through the wires and the resistance (R) of the wires. A reduction in R requires the use of highly conductive materials and large wires. The size of wires is limited by the cost of materials and weight. The table lists the resistances and masses of 1000-m sections of copper wires of different diameters at two different temperatures.
Based on the table, if the temperature changes from 25°C
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

Question Posted: