v-I characteristics Flashcards
1
Q
why does a surge of current flow through a filament lamp when switched on
A
When the lamp is switched on, the filament is cold and its resistance is much less than at its working temperature.
physics alevel (theory) > v-I characteristics > Flashcards
why does a surge of current flow through a filament lamp when switched on
When the lamp is switched on, the filament is cold and its resistance is much less than at its working temperature.
physics alevel (theory) (22 decks)