Question

Refer to Interactive Solution 19.37 to review a method by which this problem can be solved. The electric field has a constant value of 4.4 x 10³ V/m and is directed downward. The field is the same everywhere. The potential at a point P within this region is 201 V. Find the potential at the following points: (a) 8.5 x 10^-3 m directly above P, (b) 3.0 x 10^-3 m directly below P, (c) 5.3 x 10^-3 m directly to the right of P.

Answer 1

Given that

The electric field has a constant value of (E) =4.4 x 10³ V/m and is directed downward.

The field is the same everywhere. The potential at a point P within this region is(V1) =201 V.

We know that

dV =E*d

V1 -V2 =E*d

a)

201 -V2 =4.4 x 10³ V/m*(8.5 x 10^-3 m)=37.4 then V2 =163.6V

Taking P as reference and said that electric field directed downwards then s

points above P has higher potetnial and points below p has low potential and option c) zero since both are in same plane

Got it

Similarly by using above formula we find rest of the values.