The force experienced by a unit positive test charge placed at a point is called

The electric field at a specific point is defined as the electrostatic force experienced by a unit positive test charge placed at that location. Mathematically, the electric field intensity (E) is expressed as the ratio of the force (F) to the magnitude of the test charge (q), or E = F/q. This definition ensures that the field strength is independent of the magnitude of the test charge itself. The direction of the electric field is conventionally defined as the direction of the force acting on a positive test charge; thus, it points away from positive source charges and toward negative ones [2]. While magnetic fields exert forces on moving charges [3], the static force per unit positive charge specifically defines the electric field.

Sources

1. [1] https://www.khanacademy.org/science/electrical-engineering/ee-electrostatics/ee-electric-force-and-electric-field/a/ee-electric-field
2. [2] https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:electric-force-field-and-potential/x0e2f5a2c:electric-fields/v/electric-field-direction
3. [3] https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:non-contact-interactions/x1baed5db7c1bb50b:electric-and-magnetic-forces/a/electromagnetism