Electric Dipole Moment-12- free to learn

Electric Dipole Moment-12

It is defined as a system of two charges equal in magnitude and opposite in nature.

Uniform non-uniform distribution of charge-Electric Dipole Moment-12

Induced dipoles

Electric Field of a dipole-Electric Dipole Moment-12

Electric field at a point on equatorial line due to a dipole

Summary-Electric Dipole Moment-12

• The direction of the electric field due to an electric dipole at any point on its axial line is the same as that of the electric dipole moment.
• The direction of the electric field due to an electric dipole at any point on its equatorial line is opposite to that of the electric dipole moment.
• The strength of the electric field at a point on the axial line of an electric dipole of a very small length is twice as that at the same distance on its equatorial line.
• In a uniform electric field, an electric dipole experiences only a torque, but when the electric field is non-uniform, it experiences torque as well as a net force.
• The orientation of the electric dipole along the electric field corresponds to the stable equilibrium.
• Torque on the dipole is maximum when it is placed at right angles to the direction of the electric field.
• The torque on the dipole becomes zero when it aligns itself in the direction of the electric field.
• For an ideal electric dipole, the charge q on either of the poles is very large and the length of the dipole in very small

Electric Dipole Moment-12-Frequently asked questions and their answers-Part-1

•  Ques. What is the electric dipole moment?                                                                                      Ans: Electric dipole moment is the product of either charge and the electric dipole length.
• Ques. Define the term, electric dipole moment. Is it a scalar or a vector quantity?                                                   Ans: Electric dipole moment is the product of either charge and the electric dipole length. It is a vector quantity whose direction is from negative charge to positive charge (-q to +q)
• Ques: What is the SI unit of electric dipole moment?                                                                                     Ans: The SI unit of electric dipole moment is coulomb-meter (Cm)
• Ques: What is the direction of an electric field at a point on the equatorial line of an electric dipole?                     Ans: The direction of an electric field at a point on the equatorial line of an electric dipole is opposite to that of the electric dipole moment vector.

Electric Dipole Moment-12-Frequently asked questions and their answers-Part-2

• Ques: Is it correct to write the unit of electric dipole moment as mC in place of Cm?                                  Ans: The symbol mC represents milli coulomb which is the unit of electric charge. Therefore, it is not correct to write the unit of electric dipole moment as mC.

Electric Dipole Moment-12-Frequently asked short-answered questions in Board

• What is an electric dipole? Define electric dipole moment-12 and give its units.
• Define the term electric dipole moment give you. It’s units. Drive an expression for the maximum torque acting on an electric dipole when held in a uniform electric field.
• Drive an expression for the electric field intensity at any point along the axial line of an electric dipole.
• What is an electric dipole, calculate electric field intensity at a point on the axial line of a dipole.
• Define the electric dipole moment, and calculate the electric field intensity at a point on the equatorial line of the dipole.
• Drive an expression for the torque experienced by an electric dipole placed in a uniform electric field.
• Draw a libel diagram showing an electric dipole, making an angle theta with a uniform electric field. E. Drive an expression for the top experienced by the dipole.