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प्रश्न
Depict the orientation of the dipole in (i) stable, (ii) unstable equilibrium in a uniform electric field.
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उत्तर
Depicting the orientation of the dipole in
(i) stable equilibrium in a uniform electric field

Net force is zero in this case as qE - qE = 0
Net torque = pEsinθ as θ = 0°
(ii) unstable equilibrium in a uniform electric field.
Net force is negative in this case as - qE - qE = -2qE
Net torque = pEsinθ as θ = 180°
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संबंधित प्रश्न
A short electric dipole (which consists of two point charges, +q and -q) is placed at the centre 0 and inside a large cube (ABCDEFGH) of length L, as shown in Figure 1. The electric flux, emanating through the cube is:

a) `q"/"4piin_9L`
b) zero
c) `q"/"2piin_0L`
d) `q"/"3piin_0L`
- Define torque acting on a dipole of dipole moment \[\vec{p}\] placed in a uniform electric field \[\vec{E}\] Express it in the vector from and point out the direction along which it acts. Express it in the vector from and point out the direction along which it acts.
- What happens if the field is non-uniform?
- What would happen if the external field
\[\vec{E}\] is increasing (i) parallel to \[\vec{p}\] and (ii) anti-parallel to \[\vec{p}\]?
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Answer the following question.
What is the unit of dipole moment?
When an electric dipole p is placed in a uniform electric field E then at what angle the value of torque will be maximum?
An electric dipole of moment p is placed parallel to the uniform electric field. The amount of work done in rotating the dipole by 90° is ____________.
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Calculate the electric dipole moment of a water molecule. Express your answer in terms of e (charge on hydrogen ions), l and θ.

