A positively charged plastic rod is brought close to, but kept away from, an insulated metal ball that was initially uncharged. No charge is transferred from the rod. What charges could be present on the left-hand side and the right-hand side of the ball?
- Aleft-hand side: $-2.0 \times 10^{-9}\,\text{A}$, right-hand side: $-1.0 \times 10^{-9}\,\text{A}$
- Bleft-hand side: $-2.0 \times 10^{-9}\,\text{A}$, right-hand side: $+2.0 \times 10^{-9}\,\text{A}$
- Cleft-hand side: $-2.0 \times 10^{-9}\,\text{C}$, right-hand side: $+2.0 \times 10^{-9}\,\text{C}$
- Dleft-hand side: $+2.0 \times 10^{-9}\,\text{C}$, right-hand side: $-2.0 \times 10^{-9}\,\text{C}$