a. Find the bandwidth of a series resonant circuit having a resonant frequency of 6000 Hz and a Q, of 15. b. Find the cutoff frequencies. c. If the resistance of the circuit at resonance is 3 Q, what are the values of Xµ and Xc in ohms? d. What is the power dissipated at the half-power frequencies if the maximum current flowing through the circuit is 0.5 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.