Consider a small electric dipole with magnitude of dipole moment p which is placed far away from point A as shown. The electric potential at the point A is

Question

Consider a small electric dipole with magnitude of dipole moment p which is placed far away from point A as shown. The electric potential at the point A is (A) exactly zero (B) (k p /r2) (C) (- k p /r2) (D) (k p /r)

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/c8fa5079a3147e8e0aa7bf73e748d93e-.png" /> The magnitude of electric dipole moment is p. At a point distance r from point A. In this situation the dipole moment tries to rotate the dipole as given in the above figure. So, considering the position of P, the resultant potential at A is VA =(kp cos π/r2) =-(k p/I2) [∵ cos π=-1]

Q. Consider a small electric dipole with magnitude of dipole moment p which is placed far away from point A as shown. The electric potential at the point A is

exactly zero

$\frac{k p}{r ^{2}}$

$\frac{- k p}{r ^{2}}$

$\frac{k p}{r}$

Q. Consider a small electric dipole with magnitude of dipole moment p which is placed far away from point A as shown. The electric potential at the point A is

exactly zero

r2kp​

r2−kp​

rkp​

The magnitude of electric dipole moment is p. At a point distance r from point A. In this situation the dipole moment tries to rotate the dipole as given in the above figure. So, considering the position of P, the resultant potential at A is VA​=r2kpcosπ​ =−I2kp​ [∵cosπ=−1]

$\frac{k p}{r ^{2}}$

$\frac{- k p}{r ^{2}}$

$\frac{k p}{r}$