A typical flash bulb is rated at 310 mA and 2.90 V, the respective values of current and voltage under operational conditions. If the resistance of the filament when it is cold (To-20°C) is 1.12 , calculate its temperature when the lamp is on. The filament is made of tungsten with a coefficient of expansion is 4.5 x 10-3⁰C-1 x a =

A typical flash bulb is rated at 310 mA and 2.90 V, the respective values of current and voltage under operational conditions. If the resistance of the filament when it is cold (To-20°C) is 1.12 , calculate its temperature when the lamp is on. The filament is made of tungsten with a coefficient of expansion is 4.5 x 10-3⁰C-1 x a =

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter22: Electric Current

Section: Chapter Questions

Problem 73A

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