21. The temperature of the heating filament bulbs 2000

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Uploaded: 21.05.2015
Content: fiz038_21.doc (29 kB)

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21. The temperature of the heating filament bulbs 2000 ° C. Temperature coefficient of resistance lamps 0.0045 1 / K. How many times the resistance of the glow filament more than cold, at 0 ° C?

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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