Three identical light bulbs are connected in a circuit to a battery, as shown below. Compare the level of brightness of each bulb when all the bulbs are illuminated. Make sure to mention if any have the same brightness, or which ones are brighter or dimmer

Bulb A will be the brightest  Bulbs B and C will be equally bright but both dimmer than A

If A is removed, B and C will continue as if nothing had occurred.

Explanation:

Assuming the battery is ideal.

Bulb A has the full voltage across its terminals and therefore has maximum current through its resistor.

Bulb B and C will each see half of the battery voltage across their terminals as  the current flowing is common between them.

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i think the answer is a and b

i wish you luck