- #1
billiam
- 4
- 0
Ok this question is pretty rudimentary but i only have one try so I am not sure.
When is more power delivered to a lightbulb, just after it is turned on and the glow of the filament is increasing or after it has been on for a few seconds and the glow is steady?
a.) When the glow of the filament is increasing.
b.) When the glow of the filament is steady.
Ok the formula for power is P = IV. and I = Q/T
the longer the time interval, the smaller the current, and consequently the lower the power so I am thinking the answer is a.) when the glow of the filament is increasing.
Is this logic totally wrong? thanks.
When is more power delivered to a lightbulb, just after it is turned on and the glow of the filament is increasing or after it has been on for a few seconds and the glow is steady?
a.) When the glow of the filament is increasing.
b.) When the glow of the filament is steady.
Ok the formula for power is P = IV. and I = Q/T
the longer the time interval, the smaller the current, and consequently the lower the power so I am thinking the answer is a.) when the glow of the filament is increasing.
Is this logic totally wrong? thanks.