stuck on these 2 questions
1. A resistor made of Nichrome wire is used in an application where its resistance cannot change more than 2.53% from its value at 20.0°C. What is the highest temperature at which this resistor can be reliably used? The temperature coefficient of resistivity for Nichrome is 0.4 ✕ 10−3 (°C)−1.
2. An electronic device designed to operate at any temperature in the range from −9.9°C to 78.7°C contains pure carbon resistors. What is the percent difference in resistance over this range? The temperature coefficient of resistivity for carbon is −0.500 ✕ 10-3/°C.
stuck on these 2 questions 1. A resistor made of Nichrome wire is used in an...
An electronic device designed to operate at any temperature in the range from −6.0°C to 65.4°C contains pure carbon resistors. What is the percent difference in resistance over this range? The temperature coefficient of resistivity for carbon is −0.500 ✕ 10-3/°C.
1 points GiancoliWA7 18 An electronic device designed to operate at any temperature in the range from-14.1°C to 53.4°C contains pure carbon resistors. What is the percent difference in resistance over this range? The temperature coefficient of resistivity for carbon is -0.500 x 103oc. My Notes Ask Your
A resistor made of Nichrome wire is used in an application where its resistance cannot change more than 1.05% from its value at 20.0°C. Over what temperature range can it be used in °C)? lowest temperature °C highest temperature oC
A resistor made of Nichrome wire is used in an application where its resistance cannot change more than 1.30% from its value at 20.0°C. Over what temperature range (in oC) can it be used? Enter the smaller value in the first box. From -57.5 degC to 97.5 degc Submit Answer Incorrect. Tries 1/10 Previous Tries
t 2o.o°c. over what temperat ange (in c) can it be esistor made of Nichrome wire is used in an application where its resistance cannot change more than 0.70% from its value at 20.0。C. Over what temperature range (in °C) can it be used? Enter the smaller value in the first box. From to
Question 12 1 pts A Nichrome wire is used as a heating element in a toaster. From the moment the toaster is first turned on to the moment the wire reaches it maximum temperature, the current in the wire drops by 20% from its initial value. What is the temperature change in the wire? The temperature coefficient for Nichrome is a = 0.0004 (°C)-7. O 100°C O 500°C
An air heater may be fabricated by coiling Nichrome wire and passing air in cross flow over the wire. Consider a heater fabricated from wire of diameter D 1 mm, electrical resistivity P, conductivity 10 - 25 W/m - K, and emissivity .m. thermal The heater is designed to deliver air at a temperature of = 0.20 T. -50°C under flow conditions that provide a con- vection coefficient of 250 W/m The temperature of the housing that encloses the wire...
EG 171 Test Chapters 7 Date: 214れ ,3& Name 24. The amount by which the actual resistance can differ from the color-coded value is the: a. temperatare coefficient b. power rating e differiential resistance D tolerance 25. The resistance value of a chip resistor is determined from the size of the resistor three digit number printed on the body d. color-code c. three letters printed on the body True/False Indicate whether the statement is true or false 26. The practical...
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A calorimeier is a device u s eol to measure hot of roactisn th lainer wn th vr meni o insulated wall's to prevent hret exchange he enviran 2. Why is specific heat an intensive property? energy at o particular temperature 'is the some Its 9uanhhy towhich no physical alimen sian is agsian eof Nomaler heuw mach alaminunh, Is abiliy to aborb heat...