Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire with diameter 3.26 $\mathrm{mm}$ ?

2.64 $\mathrm{mm}$

Physics 102 Electricity and Magnetism

Chapter 19

Current, Resistance, and Direct-Current Circuit

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Capacitance and Dielectrics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Cornell University

Simon Fraser University

University of Winnipeg

Lectures

10:31

A capacitor is a passive two-terminal electrical component that stores electrical energy in an electric field. The effect of a capacitor is known as capacitance. The electrical charge stored in a capacitor is proportional to the potential difference between its terminals. A capacitor is defined as an electrical component that can store an electric charge. The effect of a capacitor is known as capacitance. The charge on a capacitor is directly proportional to the potential difference across its terminals. The unit of capacitance in the International System of Units (SI) is the farad (F), defined as one coulomb per volt. In electrical engineering, a common symbol for capacitance is the lowercase Greek letter "rho" (?). The capacitance of a capacitor is also expressed in farads.

18:38

In physics, electric flux is a measure of the quantity of electric charge passing through a surface. It is used in the study of electromagnetic radiation. The SI unit of electric flux is the weber (symbol: Wb). The electric flux through a surface is calculated by dividing the electric charge passing through the surface by the area of the surface, and multiplying by the permittivity of free space (the permittivity of vacuum is used in the case of a vacuum). The electric flux through a closed surface is zero, by Gauss's law.

03:41

What diameter must a coppe…

06:56

03:12

01:51

A copper wire and an alumi…

03:30

A circuit calls for a $0.5…

01:20

Sixteen copper wires of le…

02:23

What is the resistance of …

01:50

Nine copper wires of lengt…

What diameter should you m…

01:12

How must the diameters of …

00:49

(I) What is the resistance…

02:01

00:53

What length of copper wire…

01:53

we are given on aluminium wire. An aluminum wire off the hammock. 3.6 millimeter. We want to find out what diameter a copper way should have. So how the same resistance as the aluminum buyer when they're put off the same length? No. Obviously, the first thing we see is the rhesus duties off dominion aluminum and cover with assistance of value. Minimum is to 1 60 time stamp are minus eight where serious insensitivity off copper is 1.72 times 10 farm estate. Now that you know this, we know that the resistance is our scene. The resistance of the copper wear is the same as the restraints off the aluminum bar. We know the resistance is ro l buy a. So, in this case, it is roiled by a on same in this case. No, because we know the lengths are saying we can cancel the length and we have the area off the copper wire, Which is this done? We can see Is 80 off the aluminum. Why might be played by Rosie. Bye, Drew Aluminum. Now we know that the area is fighting square by four, which means I see where this is the diameter of the copper wire on fight Ale Square, where this is the diameter of the aluminum bar. It says D. C is when we play a square road on both sides and we can sell by before because DC the damage of the copper wire is the damage of aluminum are times two squared off Rosie by road. This is, as you know, the is three point of six millimeter. Know that I'm writing down the units here. Times Square rode off. Remember that The units off festivity are only got meter now Rosie is 1.72 times 10 minus eight on drill is 2.63 times to safety and their units canceled. Remember? No. Once we've got this inter calculator, we see that this is 2164 millimeters. Not that because I have left my unis here. It is easier to see what the units off. The answer it is. This is the diameter off the copper wire that would have the same resistance as the aluminum by

View More Answers From This Book

Find Another Textbook

Numerade Educator

01:54

$\bullet$ A twirler's baton is made of a slender metal cylinder of mass…

04:01

. Zoom lens, I. A zoom lens is a lens that varies in focal length. The zoom …

05:03

Metric wrenches. (a) You have a new set of metric wrenches, but need to loos…

05:53

$\bullet$ Helium gas with a volume of 2.60 $\mathrm{L}$ under a pressure of …

03:47

Typical household currents are on the order of a few amperes. If a 1.50 A cu…

06:50

A dragonfly flies from point $A$ to point $B$ along the path shown in Figure…

09:07

Compute the $x$ and $y$ components of the vectors $\vec{A}, \vec{B}$ and $\v…

03:23

$\bullet$ Chin brace. A person with an injured jaw has a brace below his chi…

04:40

A bowling ball weighing 71.2 $\mathrm{N}$ is attached to the ceiling by a 3.…

07:21

A battery-powered light bulb has a tungsten filament. When the switch connec…