A dipole is placed in a uniform electric field. Its potential energy will be minimum when the angle between its axis and the field is :

Zero

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π

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\frac{π}{2}

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None of the above

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Solution

The correct option is A Zero
The potential energy of electric dipole is,
$U = - \to P . \to E = - P E c o s θ$
where $E =$ uniform electric field
$P =$ Electric dipole
$θ =$ angle between field and dipole
The potential energy is minimum when $θ = 0$
$U = - P E$
The correct option A.

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A dipole is placed in a uniform electric field. Its potential energy will be minimum when the angle between its axis and the field is :

The correct option is A ZeroThe potential energy of electric dipole is,U=−→P.→E=−PEcosθwhere E= uniform electric field P=Electric dipole θ= angle between field and dipoleThe potential energy is minimum when θ=0U=−PEThe correct option A.

The correct option is A Zero
The potential energy of electric dipole is,
$U = - \to P . \to E = - P E c o s θ$
where $E =$ uniform electric field
$P =$ Electric dipole
$θ =$ angle between field and dipole
The potential energy is minimum when $θ = 0$
$U = - P E$
The correct option A.