Q: . An Iron wire at 0 Celcius has resistivity Ro. At which temperature the resistiv-
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A: SOlution: To brief, what is the relationship between resistance and temperature.
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A: EER = 12.7 P = 84 W t = 2.5 hours t = 2.5 * 60 * 60 t = 9000 seconds
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A: Formula
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A: Given,
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As temperature increases, the resistance of thermistors __ - and vice versa.
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- 10.RTD and thermistor work according to the same principle in which the increase in temperature causes the resistance of the sensor to increase. o True o FalseAssuming that β remained constant, what would be the resistance of the thermistor in the experiment as the temperature approached absolute zero?An electronic device designed to operate at any temperature in the range from 10.0C to 55.0C contains pure carbon resistors. By what factor does their resistance increase over this range?
- Given the tolerance on β for the thermistor, what is the absolute value of the accuracy of the reading in °C that you will get on the thermistor at 30°C? (Type in a three-decimal number) Given the tolerance on β = 3977 (+ or - 0.75% at 25°C for a 5000 ohm resister )The slope of the V-I graph of an ohmic device gives itsThe electrical resistance in ohms of a certain thermometer varies with temperature according to the approximate law :R = Ro [1 + α (T – To )]The resistance is 101.6 Ω at the triple-point of water 273.16 K, and 165.5 Ω at the normal melting point of lead (600.5 K). What is the temperature when the resistance is 123.4 Ω?
- The resistance of a copper wire increases by a factor of 1.32 when current flows through the wire compared to its resistance when no current flows and its temperature is 0°C. Calculate what is its temperature when the current flows?A 20-V storage battery delivers current at the rate of 53 A. In a 28-min period, the heat lost from the battery is 103.07 kJ. What is the change in internal energy in kJ of the battery for the discharging period? answer must be in 3 decimal placesA temperature-stable resistor is made by connecting a resistor made of silicon in series with one made of iron. If the required total resistance is 1000 ohm in a wide temperature range around 20C, what should be the resistance of the (a) silicon resistor and (b) iron resistor?
- True or False: For an Ohmic device, the resistance changes as the current through the device increases or decreases.Residential building codes typically require the useof 12 - gauge copper wire (diameter 0.205 cm) for wiring receptacles.Such circuits carry currents as large as 20.0 A. If a wireof smaller diameter (with a higher gauge number) carried thatmuch current, the wire could rise to a high temperature andcause a fire. (a) Calculate the rate at which internal energy isproduced in 1.00 m of 12 - gauge copper wire carrying 20.0 A.(b) Repeat the calculation for a 12 - gauge aluminum wire.(c) Explain whether a 12 - gauge aluminum wire would be assafe as a copper wire.A 17-V storage battery delivers current at the rate of 55 A. In a 26-min period, the heat lost from the battery is 108.71 kJ. What is the change in internal energy in kJ of the battery for the discharging period?