If bulb 2 in Figure P19.40 burns out and then acts as an open circuit (i.e., an infinite...

If bulb 2 in Figure P19.40 burns out and then acts as an open circuit (i.e., an infinite resistance), what happens to the brightness of bulbs 1 and 3? Assume the resistances of the other bulbs do not change.

(i) The brightness of both bulbs stays the same.

(ii) Bulbs 1 and 3 both get brighter.

(iii) Bulbs 1 and 3 both get dimmer.

(iv) Bulb 1 gets dimmer while bulb 3 gets brighter.

(v) Bulb 1 gets brighter while bulb 3 gets dimmer.

Hint: The brightness of a bulb increases as its current increases.