Question

Four identical bulbs are connected to a battery as shown in the figure. Then the fourth bulb is removed. BEFORE the fourth bulb is removed, how does the brightness in bulbs 1, 2, 3, and 4 compare? 3 1 3 2 2 Before After 01 > 2>3 > 4 O 1 > 2> 3 = 4 O 1 = 2 = 3 = 4 01 > 2 = 3 = 4 O 1 = 2 > 3 = 4 Submit Answer Tries 0/3 When the fourth bulb is removed, how does the brightness of bulbs 1 and 2 change? O 1 increases, 2 decreases 1 increases, 2 increases O 1 stays the same, 2 decreases O i decreases, 2 decreases 1 stays the same, 2 increases Submit Answer Tries 0/3

Answer 1

for your ularity. let was assume Volov. RIF R₂ Rez-Ry 22 case V Req= R14 R2 // (Rstry) = 2+ 2//(4) 2+ 2x 4 2tu - 3.334r. 10 - BA 3-334 PIR, BA IR2 = 7 IR = IRY IA :PR, = (333x (2) = 186 PR₂=(2,² (2) = 80 PRz = PRy= ( 102 (2) = 20 0 > > (③ = option is right censuer. lus 33 334 2+(21/2) PRIE (3:30) 3 22.150 PRy = Peg = ( 333 ) 3x (2) =) 5.540 Both O mnerears option is right ansives. (- PR, LPR) (-:PR ₂3 PR}) Decreases.