A two wires, one of Copper and the other of Nickel, if the resistance of the first is (12.7 0), and the second is (11.6 0) at room temperature, at what temperature are their resistances equal? Note that the temperature coefficient of resistivity of Copper is (0.0039 c), and for Nickel it is equal to (0.006 C).

A two wires, one of Copper and the other of Nickel, if the resistance of the first is (12.7 0), and the second is (11.6 0) at room temperature, at what temperature are their resistances equal? Note that the temperature coefficient of resistivity of Copper is (0.0039 c), and for Nickel it is equal to (0.006 C).

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

See similar textbooks

Similar questions

10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in un-cm? 11) The resistance of a copper at 30°C is 500. If the temperature coefficient of copper at 0°C is 0.00427. What is the resistance at 100°C?
A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in u0-cm?
The resistance of wire increases from 40 – ohm at 20 0C to 50 – ohm at 70 0C. Find the temperature coefficient of resistance at 0 0C.
10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in uQ-cm?
Nichrome ribbon resistor elements each has a resistance of 1 ohm. The element is made from sheet of nichrome alloy, 0.025 cm think. If the width of the ribbon is 0.3cm, what length is required per element in cm? Assume specific resistance of nichrome alloy to be 109microOhm-cm.
A resistor has a resistance of 43.6 ohm at 20°C and 50.8 ohm at 60°C. Determine the temperature coefficient of resistance of aluminium at 0°C, its resistance at 0°C and at 40°C.
Determine the thermal coefficient of resistance of copper at 50°C, then use this value todetermine the resistance of copper wire at 170° if the resistance of this copper wire at 50°C is50ohms. The thermal coefficient of resistance of copper at O°C is 0.004264/C°
Diodes Are Connected In Series To Share A Total... 21 Question • Two diodes are connected in series to share a total reverse voltage of VD=D 5 KV. Reverse leakage currents of the diodes are ID1=30 mA and Ip2=35 mA. - Find Vp1 and Vp2 for R,=R2=100 k2 - Find R, and R2 for VD1=VD2 R1 VD1 Hint: Is=L,+IRj= I,2+IR2 VD R2 VD2
How temperature effect conductivity? Explain with the help of following equation. m e'n7'
1. Given a typical tungsten filament of a light bulb, 1 m long and 0.05mm in radius. nim B. Given that the temperature resistivity coefficient of tungsten is 4.5 X 10-3/ °C, meldoig zinovovd omo A. Calculate the typical resistance of the filament given that its resistivity at 20 °C is 5.6 X 10-8 (Q -m). calculate the resistance at 2000 °C. assuming linear resistivity-temperature 2000 ert pria relation.
topic: Resistance and ohms law
A RTD made up of platinum has a=0.00385 and has a initial resistance of 220. Find the value of resistance Rt for the following temperatures. Temperature Resistance (Rt) 610 -30 1.Resistance (Rt) at Temperature 610°C = 2. Resistance (Rt) at Temperature -30°C =