What is the electric field due to a source charge at the location of a test charge? The quotient of the electric forcce exerted on the test charge and the unit charge true The quotient of the unit charge over the electric force exerted on the test charge false The product of the two charges divided by the square of the distance between them times the Coulomb's constant false The magnitude of the force exerted between each of the two charges divided by their distance from each other false Single What is the SI unit of electric field? coulomb per newton false newton per coulomb true square newtons false square coulombs false Single What is the direction of the electric field of a point charge located a distance away from a positive test charge? It points away from the test charge true It points towards the test charge false It points perpendicular to the test charge false It points at an acute angle to the test charge false Single In the context of forces, what does the superposition principle mean? An object can only move from rest when an external force acts on it false To stop an object in motion, the next external force must be high enough false Multiple forces can overlap and produce the same effect as a single force false The net force of an object is just the vector sum of forces acting on it true Single The electric field around an isolated negative charge points in what direction? towards the charge true away from the charge false perpendicular angles from the charge false multiple directions from the charge false Single Which of the following rules is true about drawing electric field lines? They should intersect each other at right angles false Their spacing indicates the direction of the field false Electric field lines always emanate from positive charges true Positive charges have a higher density of lines than negative charges false Single What is the purpose of the deflection plates of an inkjet printer? They induce a net charge on a particular droplet of ink as part of the printing process false They change the net charge on the surface of paper so that the ink drops will go towards the correct points false They direct charged drops of printer ink towards the desired areas on the surface of paper true They switch the net charge of the droplets of printer ink at will so that the droplets will land on correct points on the paper false Single What is the amount of electric field that flows through a particular surface? newton per coulomb false surface charge density false electric flux true electric current false Single Suppose you were in a car when lightning directly struck it. Despite the car's frame being made up of conducting metal, you will still be safe in it for as long as you don't touch the walls, roof, and metal parts because? The air surrounding you inside the car is an insulator that would hinder the lightning from flowing from the roof towards you false Electric charge distributes itself on the surface of all conductors in such a way that the electric field inside the car is zero true The thickness of the car's frame is just enough to prevent too much current from directly flowing through you false The wheels of the car would serve as the connection to the ground that would let the lightning to safely pass false Single Two conducting spheres A and B have the same radius. However, sphere B is hollow while sphere A is a solid insulator. Assuming both spheres have the same net charge, which is true about their respectibe electric fields? The electric field inside A is greater than that of B true The electric field inside A is less than that of B false The electric field inside A is the same as that of B false The electric field in both A and B is zero false Single