0
if length is doubled then resistivity increases&when area is doubled resistivity decreases.
Wiki User
∙ 11y ago
Anonymous
resistance increases with the increase in length of the wire and decreases with the increase in area of cross section
Add your answer:
Earn +20 pts
What is the area of a rectangle with a perimeter of 26?
Sorry- no one answer- the area will vary depending on the length of the sides.
Area of different shapes of equilateral triangle?
There is only one basic shape for an equilateral triangle. The area can only vary as the length of the sides vary.
How does the frequency vary with the length of a pendulum?
The frequency of a pendulum varies with the square of the length.
Which is the best estimate for the length of an earthworm?
Earthworms vary greatly in their length.
How many feet down one side of a half acre?
The formula for a rectangle is Length multiplied by width. The area is 21,780ft squared. If both sides are equal, then the square root of the area is a length of 147.58 feet. This is just if it's a square. If it's a rectangle both sides will vary a bit from that, and to get either, you have to measure the other length also.
Can you represent electrical conductivity by finding its electrical resistance?
Conductivity is the reciprocal of resistivity, and is expressed in siemens per metre (S/m). Resistivity and, therefore, conductivity vary with temperature so are usually quoted at a specified temperature.Resistance is expressed in ohms. If you accurately measure the resistance, length, and cross-sectional area of a conductor, then you could determine its resistivity and, from that, its conductivity.
Why do the values of resistivity differ so much between materials?
Resistivity varies because valence electrons vary, along with the lattice structure of the material.
What is the area of a rectangle with a perimeter of 26?
Sorry- no one answer- the area will vary depending on the length of the sides.
Area of different shapes of equilateral triangle?
There is only one basic shape for an equilateral triangle. The area can only vary as the length of the sides vary.
In ohms what is the electrical resistance of water?
To figure the resistance of a substance in ohms, more information would be needed. Resistance is calculated by (resistivity)*(length)/(cross sectional area). First consider a wire conductor. Electrical resistivity is a property of the substance (it usually will vary with temperature). The thicker a wire is (larger cross sectional area) will lower the resistance. The longer the wire will increase the resistance. Now consider water. There is no 'wire' so the cross sectional area of whatever conductor is in contact with the wire will be a factor. A second conductor will need to be in contact with the water to complete the current path. The distance between the conductors is the length. Resistivity has a unit of ohms*meters; when divided by area and multiplied by length, the resulting unit is ohms. The reciprocal of resistivity is conductivity, which has units of Siemens/meter (Siemens is equivalent to 1/Ohms) I have posted a link to the Wikipedia article, listing conductivity values for several conducting elements (and water as well). Pure water with no impurities actually has a very high resistivity (low conductivity, which means not much current will flow). Pure water is not very common, and the type and amount of impurities affects the conductivity of the water sample. Conductivity of typical drinking water is in the range: 0.0005 to 0.05 Siemens per meter, so the reciprocal (resistivity) is 2000 Ohm*meters to 20 Ohm*meters. Note from the same chart that deionized water has a conductivity of 5.5 × 10-6 Siemens/meter --> resistivity = 181,818 ohm*meters.
How long is a short school bus?
The length of a short school bus tends to vary depending on the area. However, the average length is about 15 ft.
What is the length of a skirt?
They can vary from floor length to thigh length.
What is the length of a bolt?
The length can vary just as with SAE
What is the fine for running a red light in Texas?
AnswerIf an actual police officer stops you, the fine is typically $250 (they recently doubled in price on most violations) but can vary by area. If you get a "Photo Ticket", then the fine is only $75.
How does the resistance of a wire vary with its lenght?
If the wire's cross-section area is constant, then its resistance per unit length is constant, and the total resistance should be directly proportional to the length of a wire segment.
How does the period of the oscillation vary with its length when the length increased?
The period increases too.
What is the length of an equileteral triangle?
It can vary but all three sides will be equal in length.
