The three lightbulbs in the circuit all have the same resistance of $1.$ By how much is the brightness of bulb A greater or smaller than the brightness of bulb B$?$

The three lightbulbs in the circuit all have the same resistance of $1.$ By how much is the brightness of bulb A greater or smaller than the brightness of bulb B$?$

$1/4$ as much$$

twice as much

$4$ times as much

the same

$1/2$ as much