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Resistivity allows us to compare different conductors' abilities to transmit electric current that is independent of the physical dimensions of the conductors.
Resistivity is defined as 'the resistance of a unit length of a substance with a uniform cross-section'. In SI, the unit of measurement of resistivity is the ohm metre; in US customary units, it is expressed in ohm circular mil per foot.
So, to finally answer your question, the resistivity of copper is 17.5x10-9 ohm metres at 20oC. To find the resistance of a copper conductor, you can then use the equation:
resistance = resistivity x (area / length)
Additional AnswerThe resistivity of copper depends on the temperature it which it is measured. At 25°C, it is about 17 nΩ.m, or 1.7 µΩ.cm.
The resistance of a conductor is then p * L / A, where p is the above number.
So for a wire with a length of 1 m (i.e. 100 cm), and a cross sectional area of 2 cm², the resistance is 17e-6 * 100 / 2 = 85 µΩ
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoElectrical resistance of a wire is the opposition of the flow of electricity through the wire. There are several factors that determine the electrical resistance of a wire. One factor is what material(s) the wire made up of. If there is two wires of equal dimensions, and if one wire is made of pure Golf while the other is made of lead, then the wire of Gold will have less resistance. Another factor that effects the resistance of a wire is the distance electricity has to travel. The longer the wire that completes a circuit the more resistance that will be encountered in the wire. A third factor that determines the resistance of a wire is size. A bigger wire will have less resistance than a small wire. Note:There are other factors not considered above one being temperature. Resistance can be calculated using Ohm's law which is the following formula R= V/I where R = resistance (Ohms), V = voltage (volts), and I = current (amps).
Wiki User
∙ 17y agoI`m Sorry But I`ve Given This A Couple Hours Calculating And I Have Yet To Get An Answer At 90 C Temp. Forgive Me. Depends On The Length Of The Wire And The Guage.
Wiki User
∙ 16y agoresistivity to what? Electrical current? Heat transfer? what kind of copper? zero degrees Celsius?
Wiki User
∙ 12y ago1.68 x 10^-8
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Which is colder 18 degree Celsius or 20 degree Celsius?
18 degrees Celsius is colder than 20 degrees Celsius.
Which is colder -18 degree Celsius or -20 degree Celsius?
The answer is -20º celsius is colder than -18º celsius.
What is gold state at 20 degree celsius?
Gold is a solid at 20 degrees Celsius.
What is 100 degree Celsius minus 20 degree Celsius?
100C - 20C equals 80C
What is the state of Copper at 20 degrees celsius?
Solid
A copper coil has a resistance of 100 at 20 degree Celsius What is its resistance at 50 degree Celsius if the temperature coefficient of copper is 3.93degree Celsius?
there isn't any go wipe ure bum your drippin
What is 20 degree Celsius in farihight?
20 degree Celsius = 68 degree Fahrenheit
What is 20 degrees Celsius in fahrenhigt?
20 degree Celsius = 68 degree Fahrenheit
Which is colder 18 degree Celsius or 20 degree Celsius?
18 degrees Celsius is colder than 20 degrees Celsius.
What is -20 degrees celsius in Fahrenheit degrees?
-20 degree Celsius = -4 degree Fahrenheit
Which is colder -18 degree Celsius or -20 degree Celsius?
The answer is -20º celsius is colder than -18º celsius.
What is gold state at 20 degree celsius?
Gold is a solid at 20 degrees Celsius.
What is 100 degree Celsius minus 20 degree Celsius?
100C - 20C equals 80C
What is the state of Copper at 20 degrees celsius?
Solid
How manny f is 20 c?
20 degree Celsius = 68 degree Fahrenheit
What degree Fahrenheit is 20 degrees Celsius?
20 degrees Celsius = 68 degrees Fahrenheit.
Is lead a good conductor of electricity in all the states?
The resistivity of lead is 208 n.Ohm.m (at 20 degrees celsius) in comparison, the best conducter, silver, has a resistivity of 15,87 n.Ohm.m widely used conducter, copper, has a resistivity of 16,78 n.Ohm.m , considered to be a good conductor resistivity of iron, considered not to be the a good conductor at all is 97 n.Ohm.m So no, lead is not a good conducter. But keep in mind, it's still a conductor, don't use it as an isolation!
