Which of these statements about a dipole are correct? 1 A dipole consists of two

Question

Which of these statements about a dipole
are correct?
1 A dipole consists of two particles whose
charges are equal in magnitude but oppo-
site in sign
2 The net electric field due to a dipole is
zero, since the contribution of the negative
charge cancels out the contribution of the
positive charge
3 At a distance d from a dipole, where d s
(where s is the separation of the charges),
the magnitude of the electric field due to
the dipole is proportional to 1/d^3
4 When placed in a constant electric field,
a dipole does not interact at all, since the
force on the positive charge is in an opposite
direction to the force on the negative charge
5 Dipoles can be detected by having an ex-
ternal field cause them to vibrate

Explanation / Answer

1 A dipole consists of two particles whose charges are equal in magnitude but oppo- site in sign 3 At a distance d from a dipole, where d s (where s is the separation of the charges), the magnitude of the electric field due to the dipole is proportional to 1/d^3 5 Dipoles can be detected by having an ex- ternal field cause them to vibrate

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