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Fundamental Electrical and Electronic Principles, Third Edition

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D.C. Circuits 57As a check that the current law has been correctly applied, considerjunctions B <strong>and</strong> C:current arriving at B Itotal current leaving I1I2so I I1 I2current arriving at C ( I1I3) ( I2 I3) I1I3 I2 I3 I1I2 IHence, current leaving battery current returning to battery.Worked Example 2.11Q For the bridge network shown in Fig. 2.24 calculate the current through each resistor, <strong>and</strong> the currentdrawn from the supply.B(I 1 I 3 )6 Ω 4 ΩI 1I 3A5 ΩCI 2I3 Ω1 Ω(I 2 I 3 )D10 VFig. 2.24AThe circuit is first labelled <strong>and</strong> the currents identified using the current law asshown in Fig. 2.24 .ABDA :06I15I33I206I1 3I25I3……………[ 1]BDCB :05I31( I2I3) 4( I1I3)5I3I2I34I14I304I I 10I……………[ 2]12 3

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