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In electric dipole is placed in an electric field of a point charge, then........ |
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Answer» (A) the resultant force ACTING on the dipole is always zero. `therefore`Electric field at the position of +q and - q are not equal. Hence, resultant force is never zero, so option (A) and (B) are wrong. If dipole becomes parallel to electric field `vecE`,then angle between `vecp` and `vecE` will be 0°, so the torque acting on dipole `tau = pE sin 0^(@) =0`, but if `phi ne 0^(@)`,the torque will not be zero, so option (C) is correct. |
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