Question

2. In the circuit below, E = 9.0 V, R1 = 1.22, R2 = 1.0 2, and R3 = 4.0 2. R1 E R2 wo (a) (3 pts) What is the equivalent resistance of this circuit? (b) (3 pts) What is the current flowing through the resistor R? I (c) (4 pts) What is the current flowing through the resistor R ?

Answer 1

I R nih Et Sol E=av Ri= 1.22 R₂ = 12 R₂ =42 R₂ Portal R₂ and Rs are parallel then R2 R₂ X R3 R₂ + R₂ 1x 4 R 1+4 R23 -ya 5 R, and R23 are in series Equivalent Resistance Req R23+R, 4 + 1.2 5 Req= Hence, = 22

Part 6) Current themouth (1) I = { Req 2,= 9 A 2 Hence #1=4.5A = 24 fart (C) Current flowsing through R2 (12) Vi = R, I, =1.2*4,5 V = 5.4 V Voltage in Rz and Re V₂ = V3 = E-vi V2 = V = 9-5.4V = 3.6V V2 = 3.6V 3.6 then, Iz V₂ R2 Hence I 2= 3.6 3,6