Questions on Characteristic Curves - Filament LampQ5. When a filament lamp is switched on it takes 0.50 seconds for the filament to reach its normal operating temperature. The way in which the current changes during the first second after switching on is shown on the graph below.
(1 mark)
(1 mark)
(1 mark)
(2 marks) (d) State and explain the change, if any, to the final current through the lamp if it is connected to the same supply with another similar lamp
(2 marks)
(2 marks) (e) State and explain why a filament lamp is most likely to fail as it is switched on. (2 marks) (Total 11 marks) |
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