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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+45)/2+(x+30)/1=0`
`rArr(2x-60+x-35+x+45+2x+60)/2=0`
`rArr6x+10=0`
`x=-5//3`
Potential at A = `-5/3V`
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