Consider the circuit at the right. Use the notation given in the figure with the

Question

Consider the circuit at the right. Use the notation given in the figure with the Consider the circuit at the right. Use the notation given in the figure with the Consider the circuit at the right. Use the notation given in the figure with the "positive" directions for the currents as shown in the figure. a) Write down the loop equations (Kirchoff's loop equations) for the two loops ABCFA and FCDEF. Also write down the relation for the currents at node C (the junction equation). Use the notation given in the figure with the "positive" directions for the currents as shown in the figure. b) If I3 = 0, find an expression for V1/V2 in terms of the resistances, R1, R2, and R3

Explanation / Answer

for loop ABCFA

v1=i1r1 +i2r2...................1

for FCDEF

v2=i2r2+i3r3......................2

node eqat c=

i2=i1+i3

if i3=0 then i1=i2

so v1=i1(r1+r2) and v2=i1r2

so v1/v2=1+r1/r2

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