A) \[1\centerdot 56\times {{10}^{-14}}J\]
B) \[5\centerdot 5\times {{10}^{-14}}J\]
C) \[2\centerdot 56\times {{10}^{-14}}J\]
D) \[4\centerdot 56\times {{10}^{-14}}J\]
Correct Answer: C
Solution :
Here, \[{{q}_{1}}={{q}_{2}}=1\,.\,6\times {{10}^{-19}}C\], \[r=9\times {{10}^{-15}}\,m\] \[=9\times {{10}^{9}}\times \frac{1\,.\,6\times {{10}^{-19}}\times 1\,.\,6\times {{10}^{-19}}}{9\times {{10}^{-15}}}\] \[=2\,\,.\,56\times {{10}^{-14}}\,J\]You need to login to perform this action.
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