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Find the potential at point A...

Find the potential at point A

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Let potential at A=x , applying kirchhoff current law at junction A
`(x-20-10)/(1)+(x-15-20)/(2)+(x-5+50)/(2)+(x+30)/(1)=0`
`rArr(2x-60+x-35+x+45+2x+60)/(2)=0`
`rArr6x+10=0`
`rArrx=-(5)/(3)`
Potential at A `=(-5)/(3)V`
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