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What is the name of a semiconductor device having negative resistance?

A tunnel diode.


What happens to its resistance when an electrical device is heated?

That will depend on the temperature coefficient of resistance of the device, which could be positive (i.e. resistance increases with increasing temperature), negative (i.e. resistance decreases with increasing temperature), or zero (i.e. resistance is unaffected by temperature changes).


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.


Why ujt called current controlled negative resistance device?

The On/OFF action in UJT is controlled by emitter current


Define Internal Resistance?

The internal resistance of a device is the resistance in ohms of that device. It is the resistance electrons need to overcome before electricity is said to flow.


What does starting resistance refer to in the context of electrical circuits?

Starting resistance in electrical circuits refers to the initial resistance encountered by a device when it is first turned on. This resistance can affect the flow of current and the performance of the device.


What is the name of the device that measures resistance?

Most multimeter are able to measure resistance.


Define and explain Negative resistance?

Plot a V-I curve for an ordinary resistor and you'll get a straight line with positive slope: as current goes up, so does voltage drop across the component. The V-I curve for some semiconductors features a region of negative slope. When the device is operating in this region, it exhibits negative resistance, which can be extremely useful when designing stable feedback systems.


What is dark resistance?

The resistance of a selenium cell or other photoelectric device in total darkness.


What is a ntc thermistor?

A NTC thermistor is a temperature sensor that has a "negative temperature coefficient". That means as temperature goes up, the resistance of the device goes down over it's operating range.


On what factors the current flowing through a device depends?

Current flowing through a device depends on resistance offered by that device.


What is the literary device that deals with blatantly negative language?

First-person narration is a literary device that deals with blatantly negative language.