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The answer to this depends on the material from which the resistance is made.
For most materials resistance increases with increasing temperature. This is referred to as having a "positive temperature coefficient".
Some materials have a negative temperature coefficient; these do have uses in electronics.
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If temperature increases than the resistance increase or decreases?
If temperature increases the resistance will also increase. This is why a light bulb is a non ohmic conductor. As the light bulb filament gets hotter its resistance will increase.Additional CommentsIt depends upon the material involved. In general, for pure metal conductors an increase in temperature will cause their resistance to increase. For insulators, an increase in temperature will cause their resistance to decrease -which is why excessive temperature is often the main reason why insulation fails. Alloys can be manufactured that will maintain a relatively constant resistance over a wide range of temperatures.Temperature affects resistance indirectly. What is actually being affected is the material's resistivity. Resistivity is one of the factors that determines resistance.The resistance of any given material can be calculated over wide range of temperatures, using the temperature coefficient of resistance for that material.
What happens to the resistance as the area increases?
Double the area means half the resistance. Resistance = resistivity times length / area. Resistivity is a property of the material only.
What is the mathematical relationship between resistance and conductance?
The relationship between resistance and temperature is determined by a material's temperature coefficient of resistance (symbol, the Greek letter 'alpha'). In general, pure metal conductors are said to have a positive temperature coefficient of resistance, which means that their resistance increases with increase in temperature; in general, insulators have a negative temperature of resistance, which means their resistance decreases with an increase in temperature. Carbon, a conductor, also has a negative temperature coefficient of resistance. This negative temperature coefficient of resistance explains why insulators fail at higher temperatures.This topic is relatively complicated, so just one example will be given. Assuming we know the resistance (R0) of a material at 0oC , then we can find its resistance (Rx) at another temperature (Tx), using the following equation:Rx = R0 (1 + alpha Tx)
How many ohms does a 9v produce?
Question is not clear.Is question asking about the battery's internal resistance ?AnswerResistance is not affected by voltage. The resistance of a material depends upon the length, cross-sectional area, and resistivity of that material. As resistivity is affected by temperature, resistance is also indirectly affected by temperature.
Why is electrical resistivity important to a design engineer?
electrical resistance increases current flow decreases.so to know the current flow in the network ,electrical resistance is required.AnswerResistivity is important, because it is one of the three factors that affect the resistance of a material. The other factors are the length and cross-sectional area of the material.
What is the relationship between resistance and temperature in a material?
The relationship between resistance and temperature in a material is that as the temperature of the material increases, the resistance also increases. This is because higher temperatures cause the atoms in the material to vibrate more, which disrupts the flow of electrons and increases resistance.
What is the relationship between temperature and resistance?
The relationship between temperature and resistance is that as the temperature of a material increases, its resistance also increases. This is because higher temperatures cause the atoms in the material to vibrate more, which disrupts the flow of electrons and increases resistance.
Why does the resistance of a semiconducting material decrease when the temperature increases?
The no of electrons in the conduction band increases when the temperature of the semiconductor material increases. therefore resistance decreases. This is also know as "Negative temperature coefficient"
What is the relationship between resistance and temperature?
• ntc 'negative temperature coefficient': its resistance decreases as the temperature increases• ptc 'positive temperature coefficient': its resistance increases as the temperature increases
What increases the?
The thermal vibration of the atoms in the material increases the resistance of that substance. The resistance is greatly depends on temperature.
When temperature increases resistance increases and conduction decreases why is this is so?
Generally when temperature increases, resistance increases and conduction decreases in metals. In semiconductors, this is generally inverted. First, when temperature increases, the molecular activity of the material increases, making the energy (and activity) of the atoms to be higher. This can make it more difficult for the electrons to participate in the cascade effect that we call electric current, hence increased resistance. Second, conductance is defined as the inverse of resistance; if resistance goes up, then conductance goes down, and vice versa.
What does the resistance vs temperature graph show for the given material?
The resistance vs temperature graph shows how the resistance of the material changes as the temperature increases. It helps to understand the material's behavior in response to temperature changes.
When the temperature increases thermistor resistance decreases?
Yes, that's correct. In a thermistor, which is a type of temperature-sensitive resistor, the resistance decreases as the temperature increases. This is because the conductivity of the thermistor material increases with temperature, causing the resistance to decrease.
What is the relationship between resistance and temperature in the resistance temperature relationship?
In the resistance-temperature relationship, resistance typically increases as temperature increases. This is because the atoms in a material vibrate more at higher temperatures, causing more collisions with electrons and increasing resistance.
What four factors determine the resistance of a material and give examples of each?
The four factors that determine the resistance of a material are resistivity (intrinsic property of the material), length (longer length increases resistance), cross-sectional area (smaller area increases resistance), and temperature (increases in temperature usually increase resistance). Examples could be copper with low resistivity, a longer wire having higher resistance, a thinner wire having higher resistance, and a material like a semiconductor having resistance affected by temperature changes.
What is the relationship between resistance and temperature in electrical circuits?
In electrical circuits, the resistance of a material typically increases as its temperature rises. This relationship is known as temperature coefficient of resistance.
How does temperature affect the resistance of conducting materials?
As temperature increases, the resistance of conducting materials also typically increases. This is because as temperature rises, the atoms in the material vibrate more, leading to more collisions with electrons, which in turn increases resistance. Conversely, as temperature decreases, resistance tends to decrease as well.
