The filament lamp is of 240 V, 60 W general rating. If the switch is switched on at a temperature of 20 ° C at a supply of 240 V, it takes an initial current of 2.5 A. If the temperature coefficient at 20° C is 0.005° C, what will be the approximate temperature of the filament?

The filament lamp is of 240 V, 60 W general rating. If the switch is s

1.	The filament lamp is of 240 V, 60 W general rating. If the switch is switched on at a temperature of 20 ° C at a supply of 240 V, it takes an initial current of 2.5 A. If the temperature coefficient at 20° C is 0.005° C, what will be the approximate temperature of the filament?
A.	1,656.3 °C
B.	165.63 °C
C.	1,800 °C
D.	180 °C
Answer» D. 180 °C