MCQ
An electric dipole when placed in a uniform electric field $E$ will have minimum potential energy, when the angle made by dipole moment with field $E$ is
  • A
    $\pi$
  • B
    $\frac{3 \pi}{2}$
  • Zero
  • D
    $\frac{\pi}{2}$

Answer

Correct option: C.
Zero
c
(c)

$U=-p E \cos \theta$

For $U_{\min } \theta=0^{\circ}$ So, $U_{\min }=-p E$

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