An electric dipole of moment p is placed in an electric field of intensity E. The dipole…
Physics · Class 12 · CBSE — Electric Charges and Fields
An electric dipole of moment p is placed in an electric field of intensity E. The dipole acquires a position such that the axis of the dipole makes an angle \(\theta\) with the direction of the field. Assuming that the potential energy of the dipole to be zero when \(\theta=90^{\circ}\) , the torque and the potential energy of the dipole will respectively be
- \(p E \sin \theta,-p E \cos \theta\)
- \(p E \sin \theta,-2 p E \cos \theta\)
- \(p E \sin \theta, 2 p E \cos \theta\)
- \(p E \cos \theta,-p E \cos \theta\)
Answer
(A) p E ,-p E
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