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Investigation in to what happens to the resistance of a thermistor as its temperature changes.
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Physics Coursework Danielle Roots Mr Small Aim: To investigate what happens to the resistance of a thermistor as its temperature changes. What is a thermistor? Is a resistor that changes in resistance with temperature. "Its principle characteristic is that their electrical resistance changes in response to changes in their temperature." http://www.betatherm.com/therm_theory.html Symbol for a Thermistor: Calculating resistance Resistance in a circuit can be calculated using the levels of voltage and current in a wire or a single component. The formula we use to measure resistance is: RESISTANCE = VOLTAGE R = V CURRENT I What is Current? Current is the flow of electrons around an electric circuit. It is measured in amps. Current is measured in Amps. 1 amp = 1 coulomb per second Per means divided by so current = charge time What is resistance? Resistance is the measure of how much the current is slowed down. The bigger the resistance, the smaller the current. Resistance is measured in Ohms...
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