Answer:
Explanation:
Calculate the distance between origin O and the point as follows:
Substitute 0 cm for for for , and for in
The electric field is,
Substitute for k, 10 nC for q, and for r in
Therefore, the electric field at the position is
The electric field is inversely proportional to the square of the distance r.
The electric field in vector form is,
Here, is the x component of electric field vector, and is the y component of electric field vector.
The x component of electric field vector is , and the y component of electric field vector is .
Substitute for , and for in
Substitute for E, and 450 for in
Therefore, the electric field vector in component form is,
The point lies in the second quadrant, so the x component of electric field vector is negative, and y component of the electric field vector is positive