Question

when does bulb glow mmore

Answer 1

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Overall, you need to increase the emf of the current source to increase the brightness of the light bulb. ... When the bulbs are in parallel, each bulb sees the full voltage V so P=V2R. Since a bulb glows brighter when it gets more power the ones in parallel will glow brighter.

$\huge\mathfrak\red{itz\:Jyotsana☺}$

Answer 2

Answer:

The bulb which dissipates more power will glow brighter. In series, both bulbs have the same current flowing through them. ... In parallel, both bulbs have the same voltage across them. The bulb with the lower resistance will conduct more current and therefore have a higher power dissipation and brightness.