Jose Miguel does not know that you find yourself involved in the question and that you do not understand ... Alomejor is missing some comma that separates the phrases but I think it is understood, if I connect 9 9V bulbs each to a 9V battery, it is capable of turn them all on or just turn on one. It is the question with other words but they already told me that in parallel yes and in series no. Thanks the same for your input