A) \[+3\times {{10}^{-23}}J\]
B) \[-3\times {{10}^{-23}}J\]
C) \[-6\times {{10}^{-23}}J\]
D) \[-2\times {{10}^{-23}}J\]
Correct Answer: B
Solution :
Potential energy of electric dipole \[U=-pE\,\cos \theta \] \[=-\,(q\times 2l)E\cos \theta \] \[U=-\,(3.2\times {{10}^{-19}}\times 2.4\times {{10}^{-10}})4\times {{10}^{5}}\cos \theta \] \[U=-\,3\times {{10}^{-23}}\] (approx.)You need to login to perform this action.
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