Question

Please explain your reasoning.

Bulb 1 2. A circuit consisting of 5 identical light bulbs, a battery and a switch is shown. When the switch, S, is closed, what can we say about the brightness of the bulbs? Bulb 2 Switch Bulb 3 a. Bulb 4 goes out b. Bulb 3 gets dimmer c. Bulb 1 is brighter than bulb 3 d. Bulb 4 is brighter than bulb 5 e Bulb 1 gets brighter Bulb 5 Bulb 4

Answer 1

after we closed the switch the total resistance of the circuit decreases so the current flow increases it means all bulb's brightness will increase after we close the switch

so bulb 1 gets brighter in the only correct option   

bulb 5, 4 , 1 and 2 have same brightness after the switch is closed

(Rar) 2-5 R V 2.5R ww ww 2R V +RtL 2

bulb 3 is brightest of all