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Question

State the Krichhoff's law of electric network. In the figure shown P=2ohmsQ=4ohms,R=4ohms and S=2ohms . Resistance between C and D is 1ohms . Find the current through each resistance.
1055058_c6c3dc811c964ff2a9723c3863671733.JPG

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Solution

By applying the equilibrium condition of wheat stone bridge we get

In loop ACDA

2I1+2Ig4I2=0

In loop CBDC

4(I1Ig)+2(I2+Ig)2Ig=0

In loop ADBA

4I1+2(I2+Ig)=2

On solving the above three equation we get

I1=17

I2=47

Ig=37


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