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A charged rod with charge 40 is placed near a neutral spherical conductor connected to the Earth with an insulator.
The conductor is then grounded then the charged rod is removed. A new neutral conducting rod is then made to contact the conductor, what
is then the final charge of the new rod after electrostatic equilibrium?
O A. A: -4Q
B. A 20
C. A:0
O D. A: 40

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