20 Find the current through the 40 resistor of the circuit in ww Ans : ITOTAL= 0.707 Amp 40 50 V 10 V PRODUCE PROFESSIONALS h Wisdom, We Explore TUTORIAL 3 Determine using superposition theorem, the voltage across the 2 ohm 8 ohm www www ohm resistor 4 ohm C2 ohm 5 Amp =0L+ 10 V T- Ans : V1= +7.06 V PRODUCE PROFESSIONALS With Wisdom, We Explore TUTORIAL 4 A 2.8 Q В www C Find the total power consumed 2.857 A 3.572A 0.7147 A + 20 V 1.5 0.2 2 10 V 0.5 Ω Ans : Power = 92.86 watts wwww www 1Ω

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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.