If a non-polar substance is placed in an electric field, what will happen?(a) A net dipole moment will be observed(b) The substance will oscillate(c) The substance will orient itself perpendicular to the electric field(d) It will conduct electricityI got this question by my college professor while I was bunking the class.The query is from Dipole in a Uniform External Field in division Charges and Fields of Physics – Class 12

If a non-polar substance is placed in an electric field, what will hap

1.	If a non-polar substance is placed in an electric field, what will happen?(a) A net dipole moment will be observed(b) The substance will oscillate(c) The substance will orient itself perpendicular to the electric field(d) It will conduct electricityI got this question by my college professor while I was bunking the class.The query is from Dipole in a Uniform External Field in division Charges and Fields of Physics – Class 12
Answer» Right CHOICE is (a) A net DIPOLE moment will be observed The best I can explain: A non-polar substance consists of a HUGE number of dipoles in it, but they are oriented randomly and hence the net dipole moment of the substance becomes 0 and it ACTS as a non-polar substance. But if it is placed in an electric field, the dipoles present in it will ORIENT themselves in the direction of the field and hence a net dipole moment will be observed, known as induced dipole moment. No current flow or oscillation of the substance will be observed.

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