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Actually it depends on the material from which the resistor is made, well in general for all practical purposes we choose a material with positive temperature coefficient as we deliberately want to add a resistance to the circuit.
But if we come across some resistors which are made up of materials like Glass, Ceramics, Semiconductors , have negative temperature coefficients (practically not used)
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If a carbon resistor increases in temperature its resistance will?
This depends on the type of conductor. If the conductor has a positive coefficient the resistance will increase. If the conductor has a negative temperature coefficient the resistance will decrease.
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 type tempcoefficient does the zener diode have?
negative tempareture It depends on the reverse voltage. Up to about 5.6 volts, the zener has a negative temperature coefficient. Beyond 5.6 volts it begins to show a positive temperature coefficient.
What type of temperature coefficient does the Avalanche breakdown has?
negative temperature coeeficient
Does carbon have a nearly zero temperature coefficient of resistance?
Yes, carbon has a negative temperature coefficient. -0.5*10^3/C
If a carbon resistor increases in temperature its resistance will?
This depends on the type of conductor. If the conductor has a positive coefficient the resistance will increase. If the conductor has a negative temperature coefficient the resistance will decrease.
Does a safe reactor have a positive or negative 'temperature coefficient of reactivity'?
negative 'temperature coefficient of reactivity'
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.
Fullform of ntc and ptc?
ntc: negative temperature coefficient ptc: positive temperature coefficient
What type tempcoefficient does the zener diode have?
negative tempareture It depends on the reverse voltage. Up to about 5.6 volts, the zener has a negative temperature coefficient. Beyond 5.6 volts it begins to show a positive temperature coefficient.
What type of temperature coefficient does the Avalanche breakdown has?
negative temperature coeeficient
What is the usage of negative temperature coefficient?
what type of question is that
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.
What is the function of a sensistor?
the sensistor functions as a temperature sensitive resistor with a positive coefficient of temperature.used for temperature compensation in various circuits
Is there any change in resistance of carbon composition resistor due to change in temperature?
yes, calculate it from temperature coefficient of resistance.
Does carbon have a nearly zero temperature coefficient of resistance?
Yes, carbon has a negative temperature coefficient. -0.5*10^3/C
What Materials have a negative temperature coefficient?
Glass, Ceramics, Semiconductors
