Q 51 When electric dipole is placed in uniform electric field its two charges experience...
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Q 51 When electric dipole is placed in uniform electric field its two charges experience equal and opposite forces which cancel each other and hence net force on electric dipole in uniform electric field is zero However these forces are not collinear so they give rise to some torque on the dipole Since net force on electric dipole in uniform electric field is zero so no work is done in moving the electric dipole in uniform electric field However some work is done in rotating the dipole against the torque acting on it An electric dipole consists of two opposite charges each of magnitude 1 0 C separated by a distance of 2 0 cm The dipole is placed in an external field of 105 N C 1 The maximum torque on the dipole is a 0 2 x 10 3 Nm b 1 x 10 3 Nm c 6 10 3 Nm d 4 x 10 3 Nm
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