- Electric Dipole and Dipole Moment
- Electric Field Due to a Dipole
- The field of an electric dipole
- Physical significance of dipoles
- Electric Charges and Fields part 28 (Problems Diapole)
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- Electric Charges and Fields part 24 (Electric Diapole)
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- Electric Dipole
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- Electric Dipole
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- Electric Charges and Fields part 25 (Electric field axial point due to diapole)
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- Electric Charges and Fields part 26 (Electric field equatorial due to diapole)
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- Electric Charges and Fields part 27 (Diapole in uniform electric field)
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An electric dipole of dipole moment`vecp` consists of point charges +q and −q separated by a distance 2a apart. Deduce the expression for the electric field `vecE` due to the dipole at a distance x from the centre of the dipole on its axial line in terms of the dipole moment `vecp`. Hence show that in the limit x>> a, `vecE->2vecp"/"(4piepsilon_0x^3)`
Derive the expression for the electric potential due to an electric dipole at a point on its axial line.
An electric dipole with dipole moment 4 × 10−9 C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 × 104 N C−1. Calculate the magnitude of the torque acting on the dipole.
Depict the orientation of the dipole in (i) stable, (ii) unstable equilibrium in a uniform electric field.
A system has two charges qA = 2.5 × 10−7 C and qB = −2.5 × 10−7 C located at points A: (0, 0, − 15 cm) and B: (0, 0, + 15 cm), respectively. What are the total charge and electric dipole moment of the system?
(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?