In the circuit shown below,

(a) Write a mesh equation by summing the voltage drops around mesh 1 (left side).

(b) Write a mesh equation by summing the voltage drops around mesh 2 (right side).

(c) Solve the two equations to find I1 and I2.

(d) Find voltage V3 across R2.










V1=5;V2=6;

R1=2000;R2=1500;R3=3000;

syms I1 I2

[I1,I2]=solve(-V1+R1*I1+R2*(I1-I2),R2*(I2-I1)+R3*I2+V2,I1,I2)

V3=R2*(I1-I2)

I1=vpa(I1,7)

I2=vpa(I2,7)

V3=vpa(V3,7)

Answers:

I1 =

0.001

I2 =

-0.001

V3 =

3.0

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