Electrical Safety Codes For safety reasons, electrical codes have been established that limit the amount of current a wire of a given size can carry. For example, an 18-gauge (cross-sectional area = 0.823 mm 2 ), rubber-insulated extension cord with copper wires can carry a maximum current of 5.0 A. Find the voltage drop in a 12-ft, 18-gauge extension cord carrying a current of 5.0 A. ( Note: In an extension cord, the current must flow through two lengths—down and back.)
Electrical Safety Codes For safety reasons, electrical codes have been established that limit the amount of current a wire of a given size can carry. For example, an 18-gauge (cross-sectional area = 0.823 mm 2 ), rubber-insulated extension cord with copper wires can carry a maximum current of 5.0 A. Find the voltage drop in a 12-ft, 18-gauge extension cord carrying a current of 5.0 A. ( Note: In an extension cord, the current must flow through two lengths—down and back.)
Electrical Safety Codes For safety reasons, electrical codes have been established that limit the amount of current a wire of a given size can carry. For example, an 18-gauge (cross-sectional area = 0.823 mm2), rubber-insulated extension cord with copper wires can carry a maximum current of 5.0 A. Find the voltage drop in a 12-ft, 18-gauge extension cord carrying a current of 5.0 A. (Note: In an extension cord, the current must flow through two lengths—down and back.)
Item 11
For safety reasons, electrical codes have been established that limit the
amount of current a wire of a given size can carry. For example, an 18-
gauge (cross-sectional area = 1.17 mm²), rubber-insulated extension cord
with copper wires can carry a maximum current of 5.0 A.
Part A
V =
Find the voltage drop in a 14 - ft, 18-gauge extension cord carrying a current of 5.0 A. (Note: In an extension cord, the current must flow through two lengths-down and back.)
Express your answer using two significant figures.
—| ΑΣΦΑ
Submit
Request Answer
?
11 of 15
V
Review
1. Consider a cylindrical wire that has conduction electron density
6.0 x 1028 and radius 0.5 mm. An electric field with strength
1
m3
7.5 x 10-4
creates a current of 4.8 × 10" electrons per second.
a) What is the average drift speed for an electron?
(include units)
b) What is the average time in between electron collisions?
fs (express your answer in femtoseconds)
QUESTION 10
The conduction electrons in a cylindrical, current-carrying wire have a drift velocity
of 0.35 mm/s. The wire has a radius of 1.0 mm and contains 8.6 x 1028
conduction electrons per m3. What is the current in the wire? (The magnitude of
the charge of an electron is 1.602 x 10-19 c.)
а. 3.0 А
b. 9.0 A
Ос. 6.0 А
d. 12 A
е. 15 А
Chapter 21 Solutions
Modified Mastering Physics with Pearson eText -- Access Card -- for Physics (18-Weeks)
Essential University Physics: Volume 1 (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
DC Series circuits explained - The basics working principle; Author: The Engineering Mindset;https://www.youtube.com/watch?v=VV6tZ3Aqfuc;License: Standard YouTube License, CC-BY