Question

PLEASE ANSWER BOTH:)

Question 5: In the circuit of the question 4, which of the following is the voltage drop between points X and Y? A) 160 V B) 120 V C) 80 V D) 40 V E) O V Question 6: In the diagram below, a circuit of five identical light bulbs and an ideal battery is shown. The voltage drop across light bulb 2 is measured to be 1.5 V. What is the voltage drop across bulb 1? 2 3 4 A) 12 V B) 7.5 V C) 4.5 V D) 3 V E) 1.5 V 5 12 V
here is the diagram for question 5!

Answer 1

I2 5 son 4 Ri=2000 R2=200 R3=200 Ry=400 I4 1 V battery - 16ov R2 and R3 are in series R23 = 20 + 20 R23 - 4002 R23 and Ru are in panallel 40x 40 Yo tho R' R2 3 X Rn R23+R4 R = 200 R and hi are in series Req= Rith' = 20 + 20 Req= 40m Freom ohn's بعدها I 16o 40 heq I=4 A Iz Ru Rut R23 40 40440 4 I 2 = 2 A Voltage drop between x and 4 point Vy - Vy = I₂ R2 + Iz Rz = 2x20+ 2x20 Vy - Vy zov Hence correct option is c) 80v

P2 1 6 soln Tg same current is 12 flowing will have in bulb 2,3 same voltage and 4 So they will drop. three bulbs so across voltage 2 + 3tvy = 1.5+ 1.5+1.5 = 4.5 V 4.50 voltage across bulb 5 is driop across bulb 1 Voltage V= 12- 4.5 V = 7.50 Hence correct option is B) 75V