   Chapter 17, Problem 19P

Chapter
Section
Textbook Problem

A wire 50.0 m long and 2.00 mm in diameter is connected to a source with a potential difference of 9.11 V, and the current is found to be 36.0 A. Assume a temperature of 20°C and, using Table 17.1, identify the metal out of which the wire is made.

To determine
The metal which wire is made with the help of table 17.1

Explanation

Given Info: The wire has length 50.0m and diameter 2.00mm . The potential difference between ends of wire is 9.11V and current passes is 36.0A The wire is at 20°C , The wire has length 50.0m and diameter 2.00mm . The potential difference between ends of wire is 9.11V and current passes is 36.0A The wire is at 20°C

Explanation:

Formula to calculate the resistance of wire is,

R=ΔVI

• R is the resistance of wire,
• ΔV is the potential difference across the ends of wire,
• I is the current through the wire.,

Substitute 9.11V for ΔV and 36.0A for I in the above equation to find R ,

R=9.11V36.0A=0.253Ω

Therefore, the resistance of wire is 0

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