Find the current in each wire

Explanation

Let potential at point B = 0. Then potential at other points are mentioned.
`therefore` Potential at E is not known numerically.
Let potential at E=x
Now applying Kirchhoff's current law at junction E. (this can be applied at any other junction also).
`(x-10)/1+(x-20)/2+(x+14)/2=0`
`4x=36rArr x=9`
`"Current in EF="(10-9)/1=1A" from F to E"`
`"Current in BE ="(30-9)/2=10.5A" from B to E"`
`"Current in DE ="(9-(-14))/2=11.5A" from E to D"`