Practice question

Question

Three similar light bulbs are connected to a constant voltage d.c. supply as shown in Fig. Each bulb operates at normal brightness and the ammeter (of negligible resistance) registers a steady current. [Image: https://www.selfstudys.com/ckeditor/plugins/imageuploader/uploads/548137bca7a.jpg] The filament of one of the bulbs breaks. What happens to the ammeter reading and to the brightness of the remaining bulbs? Ammeter reading _______ & Bulb brightness _______