Question

Each sketch shows three objects with an electric charge. In each case, decide whether there is a net force acting on the central object, Which is larger and outlined in green. If there is a net force, decide whether it pushes the center object to the left or right. Then select the appropriate button under the sketch

Answer 1

CASE -1 Like charges repel each other. All three objects have negative charges. The rightmost sphere gives minimum repulsion to central object as it has minimum charge. The leftmost sphere is equal in magnitude to the center sphere and will give a greater repulsion to the central object. Hence, the central object will experience net force pushing to the right. CASE-2 Like charges repel each other. All three objects have positive charges. The rightmost sphere gives maximum repulsion to central object as it has maximum charge and is closer to central object. Hence, the central object will experience net force pushing to the left. CASE -3 Like charges repel each other. All three objects have negative charges. The rightmost sphere and leftmost sphere are equal in magnitude but right sphere is closer to the central sphere. Hence, the central object willepenience net force pushing to the let.