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Using Kirchhoff.s rule, calculate the cu...

Using Kirchhoff.s rule, calculate the current through `40Omega and 20Omega` resistors in the following circuit.

Text Solution

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In loop ABCDA
`+80-20I_(2)+40I_(1)=0`
`therefore 4=I_(2)-2I_(1)`
In loop FCDEF
`-40I_(1)-10(I_(1)+I_(2))+4=0`
`therefore 4=5I_(1)+I_(2)`
Solving
`I_(1)=0`
`I_(2)=4A`
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