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Resistance of wire increases wen we make it thin. Because R is inversely prop. To cross section area of wire.

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11y ago
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12y ago

Nothing. Resistivity is a property of the material. The resistance (rho*L/A) will go way up.

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13y ago

Resistance will increase.

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Q: What happens to the resistivity of a conductor when it is made thinner and longer?
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It absorbs the heat from the sun, it is a better conductor of heat than the air so it remains warm longer.

Resistivity of copper at 20 degree celsius?

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

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Days get shorter and nights get longer until the winter solstice, at which point the days become longer and the nights become shorter.

When warm moist air meets cold dry air over land?

As it rises to get over the mountain it cools. As it cools it can no longer hold as much moisture in solution so this precipitates out of the air on the seawards side of the mountain. When it is over the mountain it sinks again and is warmed so it is now warm dry air and very little precipitation happens (there is a rain shadow).

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Related questions

What happens to the resistance as the conductor is measured?

The longer the conductor the greater the end to end resistance.

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A muscle becomes longer and thinner when it?


When muscles contract do they become shorter or longer?

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A change can happen when a mechanical advantage increases as it becomes longer and thinner.

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Does the length of a conductor not affect its resistance?

The length of a conductor Does affect it's resistance.The longer it is, the more the resistance.

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.

Which force squeezes Earth's crust to make the crust longer and thinner?


When muscles contrast do they get shorter or longer?

Do you mean "contract". Well, when muscles contract they get shorter and fatter. When they relax they get longer and thinner.