The aluminum sphere is lightly touched to a similarly sized sphere of rubber and then they are separated. A) What will the charge on the rubber sphere be after contact? B) What will the charge on the aluminum sphere be after contact? A similarly sized copper sphere neutral sphere is touched to the aluminum sphere and then they are separated. A) What will the charge on the copper sphere be after contact? B) What will the charge on the aluminum sphere be after contact? A third similarly sized aluminum sphere is brought into momentary contact with the copper sphere. After the contact it is found that the copper sphere attracts the FIRST aluminum sphere. What can you say about the charge state of the third sphere before it was brought into contact with the copper sphere? Physics 251 ET02 Charge transfer For the following questions consider that the charge on an electron is 1.6X10'19C. Avogadro's number is N a=6.022>