An electric field `E = (20hati + 30 hatj)` N/C exists in the space. If thepotential at the origin is taken be zero, find the potential at `(2 m, 2 m)`.

Answer

`-100V`

Explanation

From `dV = -E (dr) = - vec(E). Vec(dr)`
`= -(20 hat(i) + 30 hat(j)). [(2-0) hat(i) + (2-0) hat(j)]`
`= -40 - 60 = -100 V`