A) \[4\times {{10}^{20}}\]
B) \[2\times {{10}^{20}}\]
C) \[4\times {{10}^{19}}\]
D) \[2\times {{10}^{19}}\]
E) \[1.6\times {{10}^{19}}\]
Correct Answer: B
Solution :
\[q=it=n\times 2e\] \[n=\frac{it}{2e}=\frac{2\times 32}{2\times 1.6\times {{10}^{-19}}}=2\times {{10}^{20}}\]
You need to login to perform this action.
You will be redirected in
3 sec
