Consider the diagram and choose all the equations that are correct. E.g., enter
ID: 1439746 • Letter: C
Question
Consider the diagram and choose all the equations that are correct. E.g., enter AB.
V1 - I1R1 + V3 + V4 = 0
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part 2
For the circuit shown, R1 = 3.55 , R2 = 3.35 , R3 = 4.50 , R4 = 3.00 , R5 = 2.95 , and Vab = 4.20 V. Find V.
A) I2 + I1 = I6 B) V2 + I2R2 - V4 - V3 = 0 C) V4 - I4R3 = 0 D) V1 - I1R1 + V2 + I2R2 = 0 E) V2 + I2R2 - I4R3 + V3 = 0 F) I3 + I5 = I4 G)V1 - I1R1 + V3 + V4 = 0
Explanation / Answer
R4, R5 are in sereis = R4+R5 = 3 + 2.95 = 5.95 ohms
This 5.95 parallel with R3 ,
effective 1/Re = 1/4.5 + 1/5.95
Re = 2.56 ohms
this 2.56 is in series with R1 and R2
so RNet = R1 + R2 + 2.92
RNet = 2.56 +3.35 + 4.5
Rnet = 10.41 ohms
let i be the current in ckt
so PD Vab = IR
V/(R1+R2) = (VAb)/2.92
V = (3.55 + 3.35 )* 4.2 /(2.56)
V = 11.32 Volts