A) \[\pi \]
B) \[\frac{\pi }{2}\]
C) zero
D) \[\frac{3\pi }{2}\]
Correct Answer: C
Solution :
Since, \[U=-\overrightarrow{p}\overrightarrow{E}\] \[\Rightarrow \] \[U=-pE\cos \theta \] So, U is minimum when, \[\theta =0{}^\circ \]You need to login to perform this action.
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