Calculate the resistivity of tungsten using the results of part a. and b.

What is the light bulb's operating resistance?

This can be done with basic electrical equations.

In your case the filament is made of tungsten. This allows us to determine the work function of the filament. a) Show that the formula above is equivalent to T = T 0 + (R/R 0-1)/ .

the necessary data to calculate the resistance as a function of temperature are the resistivity ρ and the coefficient of thermal expansion β of tungsten.

Chemical applications. Tungsten(IV) sulfide is a high temperature lubricant and is a component of catalysts for hydrodesulfurization. In your case the filament is made of tungsten. They are made from a small cylinder of graphite, surrounded by a protective plastic coating. Tungsten is a metallic element that has the highest melting point of any metal. the attached sheet. between the resistance and the temperature of tungsten can be used to determine the temperature of a tungsten filament.

I'm calculating an area around 3e-5 m^2. One particular lightbulb has a 0.22-meter length of the tungsten wire used as its filament. ... How to Calculate Wire Temperature Resistance When Power is Known ... you can calculate the wire's resistance at a particular temperature. A device's resistance and operating temperature can be determined from the power output of the device and the voltage across it or current passing through it. The atomic number is 74. Tungsten resistivity is 52.8 Ωm at 20 °C, however as temperature increases, also does resistivity. This tungsten wire filament has a resistance of 19 ohms at a temperature of 20ºC. This increases the temperature of the filament to about 2500 °C. Electric current flows through the filament when the lamp is turned on. Resistance, Ohm’s Law, and the Temperature of a Light Bulb Filament Name Partner Date Introduction Carbon resistors are the kind typically used in wiring circuits. Homework Statement The resistance of the tungsten filament in a light bulb changes with temperature according to equation (1), below. a) Show that the formula above is equivalent to T = T 0 + (R/R 0-1)/ . Calculate the temperature at which a tungsten filament with an emissivity of .15 and a surface area of 4..15 and a surface area of 4. Let us call the resistance of the tungsten filament at 0°C as R(0°C), resistance of the same filament at 50°C, as R(50°C) and resistance at 150°C as R(150°C). b) Using T 0 as room temperature and R 0 as the room temperature estimate the temperature of the light bulb filament when the bulb is glowing brightly. At what temperature will … b) Using T 0 as room temperature and R 0 as the room temperature estimate the temperature of the light bulb filament when the bulb is glowing brightly. I am supposed to calculate the temperature of the light bulb at voltage 0.8280 volts and a current of 0.0853 amps. A standard 60 W 120 V light bulb has a tungsten filament that is 53.3 cm long and 46 μm in diameter.