Determine the voltage V3 for the circuit shown and also the
Determine the voltage V_3 for the circuit shown and also the power absorbed/supplied by the dependent source.
Solution
consider left side loop current as i1, top loop current as i2 and bottom loop current as i3.
all the currents in clockwise direction.
apply kvl to loop current i1
-3+i1+4(i1-i2)+2(i1-i3)=0
7i1-4i2-2i3=3
from the circuit
i2-i3=1.8v3
i2-i3=1.8*1*i3
i2-2.8i3=0
apply kvl to loop currents i2 and i3.
-5+i3+2(i3-i1)+4(i2-i1)=0
-6i1+4i2+3i3=5
from the above equation
i1=5.376 amps
i2=7.346 amps
i3=2.623 amps
voltage v3=1*2.623=2.623 volts
power for dependent source=1.8*2.623*[4(i2-i1)-5]
p=1.8*2.623*[4(7.346-5.376)-5]
p=13.5976 watts.
