Discover the Brighter Light Bulb!

Which light bulb will be brighter?

You have two incandescent light bulbs. One has a filament with a resistance of 20 ohm, while the second light bulb has a filament with a resistance of 40 ohm. Which light bulb will be brighter if both light bulbs are connected to identical power supplies?

Answer:

The light bulb with a filament resistance of 20 ohms will be brighter when both light bulbs are connected to identical power supplies.

Are you ready to shed some light on this bright topic? Let's dive in!

When it comes to incandescent light bulbs, the brightness is closely related to the resistance of the filament inside the bulb. In this case, the filament with a resistance of 20 ohms will shine brighter compared to the filament with a resistance of 40 ohms.

Why is that so? Well, the brightness of an incandescent light bulb is determined by the power dissipated by the filament. And this power dissipation is directly influenced by the resistance of the filament. A lower resistance allows more current to flow through the filament, resulting in higher power dissipation and, in turn, a brighter light. So, when both light bulbs are connected to identical power supplies, the one with a lower resistance filament will be brighter.

It's fascinating how such a simple concept can make a big difference in our daily lives. The next time you switch on a light bulb, remember that the brightness is a result of the filament's resistance and power dissipation.