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प्रश्न
Write the expression for the torque \[\vec{\tau}\] acting on a dipole of dipole moment \[\vec{p}\] placed in an electric field \[\vec{E}\].
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उत्तर
The torque \[\vec{\tau}\] acting on a dipole of dipole moment \[\vec{p}\] placed in an electric field \[\vec{E}\] is given by
\[\tau^\rightharpoonup = \vec{p} \times E^\rightharpoonup \]
\[\text { or }\]
\[ \tau^\rightharpoonup = pE\sin\theta\]
\[\text { where } \]
\[\theta = \text { Angle between dipole moment and electric field }\]
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संबंधित प्रश्न
(i)Obtain the expression for the torque `vecτ` experienced by an electric dipole of dipole moment `vecP` in a uniform electric field, `vecE` .
(ii) What will happen if the field were not uniform?
An electric dipole of length 1 cm, which placed with its axis making an angle of 60° with uniform electric field, experience a torque of \[6\sqrt{3} Nm\] . Calculate the potential energy of the dipole if it has charge ±2 nC.
Define electric dipole moment. Is it a scalar or a vector? Derive the expression for the electric field of a dipole at a point on the equatorial plane of the dipole.
Define electric dipole moment.
An electric dipole is placed at the centre of a sphere. Mark the correct options.
(a) The flux of the electric field through the sphere is zero.
(b) The electric field is zero at every point of the sphere.
(c) The electric field is not zero anywhere on the sphere.
(d) The electric field is zero on a circle on the sphere.
Answer the following question.
What is the unit of dipole moment?
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The graph of the magnitude of electric field intensity E as a function of X is ______.
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