An electric dipole is formed by two equal and opposite charges q with separation d . The charges have same…

An electric dipole is formed by two equal and opposite charges q with separation d . The charges have same mass m. It is kept in a uniform electric field E. If it is slightly rotated from its equilibrium orientation, then its angular frequency ω is:
  1. 2qEmd
  2. 2qEmd
  3. qE2md
  4. qEmd

Solution

solution

τ=pEsin⁡θ
For small angle,
τ=pE θ
α=τI=pEI θ
∵ α =ω2θ Angular frequency =pEI
=qd Emd24+md24
=2qEmd

Asked in: JEE Main 2019 (08 Apr Shift 2)

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