Question

1. An electric dipole of dipole moment is placed in a uniform electric field. Write the expression for the torque experienced by the dipole. Identify two pairs of perpendicular vectors in the expression. Show diagrammatically the orientation of the dipole in the field for which the torque is (i) Maximum (ii) Half the maximum value (iii) Zero.

Answer 1

Answer:

see ful sol blow

Explanation:

Torque τ= qE * 2lsinΘ

τ=q*2lE sinΘ

thus τ=pEsinΘ

τ=p X E, all are vectors here.

i) torque is maximum for Θ=90o and ii) hlaf for Θ=30o

iii) qero for Θ=0o

or Θ=180 degrees.

0 corresponds to stable equilibrium and 180 degrees corresponds to unstable equilibrium.