Site hosted by Angelfire.com: Build your free website today!
Main Desktop Lessons Desktop Review Desktop Lab Desktop Chart Desktop

     

115.
X, Y, and Z are identical insulated metal spheres.

X has an initial charge of + 3.0 x 10 -6 C
Y has an initial charge of - 6.0 x 10 -6  C
Z has an initial charge of + 9.0 x 10 -6 C

The spheres simultaneously touch and then separate.  Which of the following describes the conditions after separating?
   
A. Each sphere has  + 2.0 x 10 -6 C The total charge is 

(+3.0 - 6.0 + 9.0)  10 -6 C = + 6.0 x 10 -6 C

The total charge is equally dirtributed when the spheres separate.

       
+ 6.0 x 10 -6 C
---------------------- =  + 2.0 x 10 -6 C
          3

The Correct Answer is A.
B. Each sphere has + 6.0 x 10 -6 C
C. Each sphere is neutral.
D. Each sphere has its original charge.