An incandescent bulb’s brightness depends on a whole lot on resistance. The higher the resistance to current in the wiring, circuitry, and bulb, the lower will be the current, lower the power, and lower the brightness.
Conversely, lower resistance means more brightness.
When an incandescent bulb turns on, the filament’s temperature is low, meaning a low resistance, allowing an inrush of current.
So the first split second of a traditional bulb is dim. It immediately gets to full brightness as the filament temperature rises, and resistance also increases.
This immediate higher resistance allows a drop in the current. It regulates the current to an equilibrium, or a stable circuit, running your bulb at the standard current.
Answers & Comments
Verified answer
Answer:
An incandescent bulb’s brightness depends on a whole lot on resistance. The higher the resistance to current in the wiring, circuitry, and bulb, the lower will be the current, lower the power, and lower the brightness.
Conversely, lower resistance means more brightness.
When an incandescent bulb turns on, the filament’s temperature is low, meaning a low resistance, allowing an inrush of current.
So the first split second of a traditional bulb is dim. It immediately gets to full brightness as the filament temperature rises, and resistance also increases.
This immediate higher resistance allows a drop in the current. It regulates the current to an equilibrium, or a stable circuit, running your bulb at the standard current.