0
What else can I help you with?
What is a ptc heating element?
A PTC (Positive Temperature Coefficient) heating element is a type of heating element that increases resistance as temperature rises. This characteristic allows the heating element to self-regulate its temperature, providing a safety feature to prevent overheating. PTC heating elements are commonly used in appliances such as hair dryers, irons, and space heaters.
What is the temperature called at which the second virial coefficient of a real gas is zero?
The temperature at which the second virial coefficient of a real gas is zero is known as the Boyle temperature. At this temperature, the real gas behaves ideally according to the van der Waals equation of state.
What are the two factors that affect the friction force between two surfaces?
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
Diffusion coefficient of sodium chloride in water?
diffusion coefficient nacl in water at difrent concentration
What is crossover temperature?
Crossover temperature is the temperature at which two materials transition from one state to another, such as from solid to liquid or from liquid to gas. It is the temperature at which the properties of the materials change significantly.
What materials have positive temperature coefficient?
the materials are silver, aluminum, gold.
How the resistance of conducting material vary with temperature?
Well, there's typically two types of materials-Those with positive temperature coefficient and those with negative temperature coefficient. Positive temperature coefficient are those whose resistance increases as temperature increases. Negative temperature cofficient are those whose resistance decrease when the temperature increase. There are however some alloys such as Manganin& Constantan whose resistance is not affected by temperature
Fullform of ntc and ptc?
ntc: negative temperature coefficient ptc: positive temperature coefficient
Does a safe reactor have a positive or negative 'temperature coefficient of reactivity'?
negative 'temperature coefficient of reactivity'
What do you mean positive temperature co-efficient and negative temperature co-efficient of temperature?
A positive temperature coefficient means that the resistance of a material increases as temperature increases. Conversely, a negative temperature coefficient means that the resistance decreases as temperature rises. These coefficients are important in understanding how materials respond to changes in temperature and are commonly seen in the properties of semiconductors and resistors.
What is the temperature coefficient of an extrinsic semiconductor is?
positive
What is the difference between positive and negative temperature coefficient of resistance?
Negative temperature coefficient of resistance means that as the temperature of a piece of wire or a strip of semiconducting material increases, the electrical resistance of that material decreases.
What is the temperature coefficient of extrinsic semiconductor?
positive
Do The resistance of a material generally increases as its temperature increases?
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.
What happens when the temperature of a forward biased diode is increased?
What happens depends on the temperature coefficient of the diode. If that diode has a positive temperature coefficient, it resistance increases with increased temperature. A diode with a negative temperature coefficient does the opposite.
Why does the resistance of a thermistor decrease as the temperature rises?
Some materials have negative temperature coefficients of resistance, and some have positive temperature coefficients. Carbon is an example of a substance with a negative thermal coefficient of resistance, so it's resistance will decrease as it gets hotter.
What Materials have a negative temperature coefficient?
Glass, Ceramics, Semiconductors
