Networks Analysis and Synthesis

Q1: In a tungsten filament lamp

A the current at the instant of switching is less than operating current

B the current at the instant of switching is more than operating current

C the current at the instant of switching is equal to operating current

D the current at the instant of switching may be less than or equal to operating current

ANS:D - the current at the instant of switching may be less than or equal to operating current

Resistance at the time of switching on is minimum and increases due to increase of temperature.



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