4.1 Teminotogy95Identifying Node, Eranch, Mesh and Loop in a circuitFor the circuit in Fig 4.3, identifya) a[ nodes.b) all essentialnodes.c) all brarches.d) all ess€trtial branches.e) all mesh€s.0 two paths that are not loop6 or essential branches.g) two loops that are trot meshes.Sotutiona) The nodes are a, b, c, d, e, f, and g.b) The essential nodes are b, c, e, and g.c) The branches are ?J1, tb, Rt, R2, R3, R4, R5, R6,R?, and 1.d) The essential branches are2,2 - R4, R5, R6, R7, and I2\)RzdR3R,",()Rz - RlNOTE: Assess your understandingof this motelial bt ttting Chopter Prcblettus 4.2 snd 4.3Simultaneous Equations-How Many?The number of unktrown currents in a circuit equals the number ofblaltrche$ ,, where the current is not known. For exadple, the circuitshowtr itr Fig. 4.3 has nitre branches in which the cu[ent is uoknown.Recal that we must have D itrdependent equations to solve a circuit withb unknown currenls If we bt ,r rcpresent the number of nodes in the circuit,we can derive ,l
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Kirchhoff's circuit laws, Kirchhoff, Gustav Kirchhoff, current law, esh ndL oopn, Chopter Prcblettus4.2 snd