An electric dipole is placed in a non-uniform electric field vecE.The electric field is along x direction.The dipole will experience .

Question

An electric dipole is placed in a non-uniform electric field vecE.The electric field is along x direction.The dipole will experience . (A) A torque when the dipole is parallel to vecE (B) A torque when the dipole makes an angle with vecE (C) A force perpendicular to vecE (D) A force when the dipole is parallel to vecE

Tardigrade Admin · Accepted Answer

For parallel condition, the line of action of forces is same, so no torque. But F = q (E1-E2)≠0 If E1=E2 or E1≠ E2 τ≠0

Q. An electric dipole is placed in a non-uniform electric field $E .$ The electric field is along x direction.The dipole will experience .

A torque when the dipole is parallel to $E$

A torque when the dipole makes an angle with $E$

A force perpendicular to $E$

A force when the dipole is parallel to $E$

For parallel condition, the line of action of
forces is same, so no torque. But F = q $(E_{1} - E_{2}) \neq = 0$
$I f E_{1} = E_{2} or E_{1} \neq = E_{2}$
$τ \neq = 0$

Q. An electric dipole is placed in a non-uniform electric field E.The electric field is along x direction.The dipole will experience .

A torque when the dipole is parallel to E

A torque when the dipole makes an angle with E

A force perpendicular to E

A force when the dipole is parallel to E