The resistance of hot tungsten filament is about 10 times the cold resistance.

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asked Mar 24, 2018 in Physics by paayal (26,720 points) 4 6 11

The resistance of hot tungsten filament is about 10 times the cold resistance. What will be the resistance of 100W and 200V lamp when not in use?

(a) 400Ω 

(b) 200Ω 

(c) 40Ω 

(d) 20Ω

1 Answer

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answered Mar 24, 2018 by sanjaydas (61,430 points) 5 7 7
selected Mar 26, 2018 by Vikash Kumar
 
Best answer

(c) : Resistance of hot tungsten

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