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What would be the effect of a change in temperature on the resistivity?
A change in temperature generally increases the resistivity of most materials. This is because as temperature rises, the atoms in the material start to vibrate more vigorously, causing more collisions between electrons and atoms. These collisions impede the flow of electrons, resulting in an increase in resistivity. Conversely, at lower temperatures, resistivity tends to decrease due to reduced atomic vibrations and fewer collisions.
Why the electrical conductivity of material decreases with resistivity incrreasing?
As resistivity increases, it indicates that the material has more resistance to the flow of electricity. This increased resistance causes a decrease in electrical conductivity, as the electrons have a harder time moving through the material. In essence, higher resistivity hinders the ability of electrons to freely move and carry electrical current.
If the diameter of wire is double what is resestivity?
Resistivity won't change. Resistivity is a material property that doesn't depend on the shape.
What happens to wave speed as the depth of the water increases?
As the depth of water increases, the wave speed tends to decrease. This is due to the decrease in wave amplitude as the wave energy is dispersed over a larger volume of water. The decrease in wave speed is also influenced by the change in water density and the effect of friction on the bottom of the water body.
Can resistivity be negetive?
No, resistivity cannot be negative. Resistivity is a material property that indicates how strongly a material opposes the flow of electric current. It is always a positive quantity, even though some materials may have very low resistivity values.
When a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of both?
The resistivity of germanium will decrease with increasing temperature due to a positive temperature coefficient of resistivity, while the resistivity of silicon will increase with increasing temperature due to a negative temperature coefficient of resistivity. At room temperature, silicon will have a higher resistivity compared to germanium.
Water resistivity depends on?
Several factors influence water resistivity. Some of the most important are 1) the concentration of ions in the water; 2) the mobility of the ions in the water (smaller ionic radius ions tend to decrease water resistivity more than larger ionic radius ions); 3) the oxidation state of the ions; and 4) the temperature of the water.
What would be the effect of a change in temperature on the resistivity?
A change in temperature generally increases the resistivity of most materials. This is because as temperature rises, the atoms in the material start to vibrate more vigorously, causing more collisions between electrons and atoms. These collisions impede the flow of electrons, resulting in an increase in resistivity. Conversely, at lower temperatures, resistivity tends to decrease due to reduced atomic vibrations and fewer collisions.
In January the depth of a lake was 944 feet. In August the depth of the lake was 519.2 feet. What is the percentage decrease of the depth of the lake from January to August?
It is a 45% decrease
If A conductor has a resistance of 0.8 ohms what will happen to its resistance if the temperature is decreased?
The resistance of a conductor is directly proportional to the resistivity of the conductor. since the resistivity of a conductor is decreases with decrease in temperature hence the resistance.
The depth of penetration or skin depth for an electromagnetic field of frequency f in a conductor of resistivity r and permeability m is?
directly proportional to r and inversely proportional to f and m
Does the temperature in Earth's crust decrease in depth?
false, the temperature increases with depth
Does a groove decrease the drums diameter by twice the depth of the groove?
Yes, a groove will decrease the effective diameter of the drum, but not by twice the depth of the groove. Instead, the reduction in diameter is equal to the depth of the groove, which is subtracted from the original diameter. Therefore, the overall decrease in diameter is exactly equal to the depth of the groove, not doubled.
Does the depth of field increase or decrease when one moves to a higher magnification on a microscope?
The depth of field decreases.
Why does the temperature in the thermocline decrease with depth?
The sun can't reach the thermocline layer to heat that depth of water
Why does the temperature in the thermocline decrease quickly in depth?
The sun can't reach the thermocline layer to heat that depth of water
What has the author Ian K George written?
Ian K. George has written: 'A new approach to the investigation of theoretical depth profiles in electrical resistivity surveying'
