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Given the electric field vector E=

**(1-sin (phi))+**

__x____.cos(phi)__

**y**__and__

**x**__are unit vectors.__

**y**Calculate the potential difference between the points A(0,1) and B(1,0).

along :

1- Circular arc from(0,1) to (1,0)

2-straight line connecting (0,1) and (1,0)

thank you.