The electric field intensity at a point is  $ 20\hat{i} + 15\hat{j} N/C$. Considering potential at origin to be zero, the potential at P (2, 2) is

100 V -100V 70V -70V

-70V

$ V = -[ \int_0^x{E_x dx} + \int_0^y{E_y dy}] = - [E_x X + E_y Y] = -70V$