An electric dipole is placed in an uniform electric field vecE such that the dipole moment vecp makes an angle β(≠ 0) with vecE. The force and torque acting on the dipole are respectively given by

Question

An electric dipole is placed in an uniform electric field vecE such that the dipole moment vecp makes an angle β(≠ 0) with vecE. The force and torque acting on the dipole are respectively given by (A) 0, vecp × vecE (B)  vecp ⋅ vecE, vecp × vecE (C)  vecp × vecE, 0 (D)  vecp × vecE, vecE × vecp

Tardigrade Admin · Accepted Answer

In a uniform electric field, a dipole experiences zero force. And torque acting on the dipole, vecτ= vecp × vecE.

Q. An electric dipole is placed in an uniform electric field $E$ such that the dipole moment $p$ makes an angle $β (\neq = 0)$ with $E$ . The force and torque acting on the dipole are respectively given by

$0, p \times E$

$p \cdot E, p \times E$

$p \times E, 0$

$p \times E, E \times p$

In a uniform electric field, a dipole experiences zero force.
And torque acting on the dipole, $τ = p \times E$ .

Q. An electric dipole is placed in an uniform electric field E such that the dipole moment p​ makes an angle β(=0) with E. The force and torque acting on the dipole are respectively given by

0,p​×E

p​⋅E,p​×E

p​×E,0

p​×E,E×p​