Let be the first-order electric circuit shown in the figure below. It is known that the switch T changes state, from open to closed, at instant t=0 and that, once said switch is activated, the network reaches the stable state after 500 ms a) Find the expression for the voltage v(t), for all t>0 b) Find the value of the capacitance C c) Represent graphically, and approximately, the behavior as a function of time of the voltage found in part a)

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Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors.  The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.