A) \[2.77\times {{10}^{-8}}J\]
B) \[1.77\times {{10}^{-8}}J\]
C) \[2.35\times {{10}^{-8}}J\]
D) \[1.35\times {{10}^{-8}}J\]
Correct Answer: A
Solution :
Electrostatic energy \[U=\frac{1}{2}C{{V}^{2}}\] \[=\frac{1}{2}(15\times {{10}^{-12}})\times {{(60)}^{2}}\] \[=\frac{1}{2}\times 15\times 36\times {{10}^{-12}}\times {{10}^{2}}\] \[=270\times {{10}^{-10}}=2.70\times {{10}^{-8}}J\]
You need to login to perform this action.
You will be redirected in
3 sec
