Example: The filament of a 240 V lamp is to be manufactured from a wire having adiameter of 0.002 mm and a resistivity of 4.3 µ2.cm at 20 °C. If a=0.005/C, what 1ength of filament is necessary if the lamp is to dissipate 60 watts at a filamenttemperature of 2420°C.

Answered: Image /qna-images/answer/df8548e2-9abe-4670-809b-c73748e8c73a.jpg

Example: The filament of a 240 V lamp is to be manufactured from a wire having a diameter of 0.002 mm and a resistivity of 4.3 u2.cm at 20 °C. If a-0.005/°C, what 1 ength of filament is necessary if the lamp is to dissipate 60 watts at a filament temperature of 2420°C.

Example: The filament of a 240 V lamp is to be manufactured from a wire having a diameter of 0.002 mm and a resistivity of 4.3 u2.cm at 20 °C. If a-0.005/°C, what 1 ength of filament is necessary if the lamp is to dissipate 60 watts at a filament temperature of 2420°C.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter23: Resistive-inductive-capacitive Series Circuits

Section: Chapter Questions

Problem 1RQ: What is the phase angle relationship of current and the voltage dropped across a pure resistance?

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Electrical wiring is the way of integrating cables and wires to interconnected equipment such as fuses, switches, sockets, lights, fans, and so on to the main distribution board, which is a specific structure attached to the utility pole that ensures a constant power supply.

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Example: The filament of a 240 V lamp is to be manufactured from a wire having a
diameter of 0.002 mm and a resistivity of 4.3 µ2.cm at 20 °C. If a=0.005/C, what 1
ength of filament is necessary if the lamp is to dissipate 60 watts at a filament
temperature of 2420°C.

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