The formula for finding electric field at a point x away from the origin is E = kQ/x^2, where E is the electric field strength, k is Coulomb's constant, Q is the charge of the source, and x is the distance from the origin.
The electric field strength decreases as the distance from the origin increases. This is because the electric field spreads out as it moves away from the source, resulting in a decrease in strength at farther distances.
Yes, the electric field at a point x away from the origin can be negative. This indicates that the electric field is directed in the opposite direction of the positive charge source.
The electric field strength is directly proportional to the charge of the source. This means that as the charge of the source increases, the electric field strength at a point x away from the origin also increases.
The units for electric field are N/C (newtons per coulomb) when finding it at a point x away from the origin. This represents the force per unit charge at a given point in space.