An electric dipole with dipole moment 5 × 10 - 7   C   m is in the electric field of 2 ×…

An electric dipole with dipole moment 5×10-7 C m is in the electric field of 2×104 N C-1 at an angle of 60° with the direction of the electric field. The torque acting on the dipole is
  1. 9×10-3 N m
  2. 1×10-4 N m
  3. 8.66×10-3 N m
  4. 2.88×10-3 N m

Solution

The torque is calculated by doing vector product of dipole moment and the electric field.

⇒τ=PEsinθ⇒τ=5×10-7×2×104×32=8.66×10-3 N m

Asked in: AP EAMCET 2022 (04 Jul Shift 1)

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