Which bulb X or Y is brighter, and which has higher resistance?

There are factors that affect resistance of the filament (conductor):

• length

• cross-sectional area

• Resistivity

For our syllabus, brightness of the bulb depends on power. The higher the power, the brighter the bulb.

e.g. a 100 W bulb is brighter than a 60 W bulb,

View the video to understand the concepts better

Video

https://www.youtube.com/watch?v=fJtreAZQlJA