Which Bulb Will Glow Brighter?

Question:

If two bulbs are marked 60W, 220V and 100W, 220V, and connected in parallel to a 220V mains, which one out of the two will glow brighter?

Answer:

The 100W bulb will glow brighter than the 60W bulb when connected in parallel to a 220V mains due to consuming more power, which makes it emit more light.

When we have two bulbs marked as 60W, 220V and 100W, 220V, and these are connected in parallel to a 220V mains, the brightness of the bulbs is determined by their power rating, not voltage.

Power is the rate at which energy is consumed or transferred. The 100W bulb with the same voltage as the 60W one will consume more energy, and thus, will glow brighter. This is because the 100-W bulb uses more power to generate more light, despite having the same voltage as the 60-W bulb.

Light bulbs essentially act as resistors that heat up when current flows through them, causing them to emit visible light. In this scenario, the bulb with higher power (100W) will emit more light compared to the bulb with lower power (60W) when connected in parallel to a 220V mains.