2) What the difference between electric force and electric field? (2 points) 3) Consider two forces F1 and F2 of magnitudes 5N each pulling at object lying at the origin. F1 is directed along X-axis, whereas F2 is directed along Y- axis. Determine the resultant force (magnitude and direction) experienced by the object. (2 points) 4) If the magnitude of one charge is increased by 4 times, the electrostatic force between them (1 point): (i) Increases by a factor of 2 (ii) Increases by a factor of 4 (iii) Increases by a factor of 16 (iv) decreases by a factor of 2.