Math  /  Numbers & Operations

QuestionA billion electrons are added to pith ball. Its charge is: (A) 1.6×1010C-1.6 \times 10^{-10} \mathrm{C} (B) 1.6×1012C-1.6 \times 10^{-12} \mathrm{C} (C) 1.6×1010C-1.6 \times 10^{-10} \mathrm{C}

Studdy Solution
Perform the multiplication to find the total charge.
Total charge=1.6×1019+9C \text{Total charge} = -1.6 \times 10^{-19 + 9} \mathrm{C}
Total charge=1.6×1010C \text{Total charge} = -1.6 \times 10^{-10} \mathrm{C}
The charge on the pith ball after adding a billion electrons is:
1.6×1010C\boxed{-1.6 \times 10^{-10} \mathrm{C}}
This corresponds to option (A).

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