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In panel B, what causes the ball to move toward Can 1?
1 What is the charge on Can 1 at the moment shown in panel B?
A.same as Van de Graaff
B.opposite of Van de Graaff
C.neutral
2 What is the charge on Can 2 at the moment shown in panel B?
A.same as Van de Graaff
B.opposite of Van de Graaff
C.neutral
3 What is the charge on the ball at the moment shown in panel B?
A.same as Van de Graaff
B.opposite of Van de Graaff
C.neutral
