Determine i2(t) in the circuit shown in Figure P4.50. Assume:

i1(t) = 100 cos(?t + 4)mA

i3(t) = 80 sin(?t ? 1.2)mA

i4(t) = 150 sin(?t + 2)mA

? = 377 rad/s


Analysis:

Simple KCL can be used here to find the missing current. If KCL is used at the top-right node you derive the following equation:





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