Two identical light bulbs, B1 and B2, are connected in parallel to an ideal 6 V battery. A switch S is connected across B2 (between the two nodes to which B2 is attached). Initially, S is open and both bulbs glow equally. The switch is then closed.
(i) State the new state of the branch containing B2 (open, closed, or short).
(ii) Indicate whether the brightness of B1 increases, decreases, or stays the same after S is closed.