A) \[-1\centerdot 1\,J\]
B) 2J
C) \[2\centerdot 5\,J\]
D) 3 J
Correct Answer: A
Solution :
Here, \[{{q}_{1}}=4\,\,\mu C,\,\,\,{{q}_{2}}=-3\,\,\mu C\] \[r=10\,\,cm\,\,=\,0\,.\,1\,m\] Electrostatic potential energy, \[U=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{{{q}_{1}}{{q}_{2}}}{r}\] \[=9\times {{10}^{9}}\times \frac{4\times {{10}^{-6}}\times \left( -3 \right)\times {{10}^{-6}}}{0\,.\,1}=-1\,.\,1\,J\]
You need to login to perform this action.
You will be redirected in
3 sec
