A) \[8.00\times {{10}^{10}}\]
B) \[5.00\times {{10}^{10}}\]
C) \[3.13\times {{10}^{11}}\]
D) \[9.60\times {{10}^{10}}\]
Correct Answer: C
Solution :
[c] The charge in a pulse \[dq=Idt\] \[=5.00\times {{10}^{-8}}C.\] \[n=\frac{q}{e}=\frac{5\times {{10}^{-8}}C}{1.6\times {{10}^{-19}}C}=3.12\times {{10}^{11}}\]
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