Physics 30: Assignment 4 2 225m | 3.75m What is the net electrostatic force on charge A? (3 marks) Include a vector diagram with your answer (1 mark) 4. Select the graph that best represents the relationship between the electric field and the radius. {1 mark) 'L'I_ 5. You have three objects: a solid, flat conducting plate, an irregularly shaped solid conducting object and a hollow conducting object. Identify the object that can accumulate the greatest amount of charge and explain why (2 marks) ' ' - KGsource 2 6. Explain why the equation r cannot be used in the following situation: (1 mark) - +r - 2 - ... *I_E_.- - + = - +-E - E between two parallel charged plates