A) \[\text{2}.\text{3}\times \text{l}{{0}^{\text{12}}}\]
B) \[\text{2}\text{.3 }\times \text{l}{{0}^{\text{19}}}\]
C) \[\text{2}.\text{3 }\times \text{ 1}{{0}^{\text{8}}}\]
D) \[\text{2}\text{.3 }\times \text{ 1}{{0}^{\text{6}}}\]
Correct Answer: A
Solution :
\[i=\frac{ne\times 2}{t}\] \[\therefore \] \[\frac{0.25}{{{10}^{6}}}=\frac{n\times 2\times 1.6\times {{10}^{-19}}}{3}\] \[\Rightarrow \] \[n=\frac{0.25}{{{10}^{6}}}=\frac{n\times 2\times 1.6\times {{10}^{-19}}}{3}\]
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