2020 CAIE AS & A level October November Physics Paper 11 Q. No. 36 (9702/11/O/N/20) by Sajit Chandra Shakya from Nepal Chapter - CURRENT ELECTRICITY Three identical lamps L1, L2 and L3 are connected to a battery with negligible internal resistance, as shown. What happens to the brightness of lamps L1 and L2 when the switch S is closed?