A) \[1.25\times {{10}^{14}}\]
B) \[2.23\times {{10}^{14}}\]
C) \[3.25\times {{10}^{14}}\]
D) \[5.25\times {{10}^{14}}\]
Correct Answer: A
Solution :
[a] Charge on an electron \[=1.6\times {{10}^{-19}}\] coulomb No. of electrons required\[=\frac{20\times {{10}^{-6}}}{1.6\times {{10}^{-19}}}\] \[=\frac{20}{1.6}\times {{10}^{13}}=1.25\times {{10}^{14}}\]
You need to login to perform this action.
You will be redirected in
3 sec
