Log in
Physics
1
answer
0
watching
51
views
27 Nov 2019

1. Determine the current in the wolfram filament with the diameter0.8 mm and the temperature T=2800K, which is maintained constant.Specific electrical resistance of the filament is ? =0.92·10-4Ohm·cm. The temperature of environment is t = 17C.

Watch
1
answer
0
watching
51
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Jean Keeling
Jean KeelingLv2
12 Mar 2019

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.50 x 10-3 / °C. When the filament is hot and glowing, its temperature is seven times room temperature (20 °C). What is the resistance of the filament (in ohms) at room temperature?

A small bulb is rated at 7.5 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.5x10^-3 / C. When the filament is hot and glowing, its temperature is seven times room temperature (20 C). What is the resistance of the filament (in ohms) at room temperature?

A certain lightbulb has a tungsten filament having a resistance of14 O at 25°C and 145 O when hot. Assume R = R0[1 + a(T - T0)] canbe used over the large temperature range here. Find the temperatureof the filament when it is hot.

°C?

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in