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The voltage needed for starting the glow of the lamp and the voltage, when the lamp extinguishes, are not equal. Explain why?

Miryala Gopalakrishna , 10 Years ago
Grade 12th pass
anser 2 Answers
Shobhit Varshney

Last Activity: 10 Years ago

Hi,

To get the lamp started you need a spike ofhigh voltageto get the arc started. The colder the lamp is, the higher voltage you need to get a start. The voltage 'forces' current through the argon gas. Gas has a resistance, the colder the gas, the higher the resistance, therefore you need a higher voltage with colder temperatures.

thanks

Shivam jha

Last Activity: 7 Years ago

To get the lamp started you need a spike ofhigh voltageto get the arc started. The colder the lamp is, the higher voltage you need to get a start. The voltage `forces` current through the argon gas. Gas has a resistance, the colder the gas, the higher the resistance, therefore you need a higher voltage with colder temperatures.

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