![]() Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License. The dipole moment of a molecule can be calculated by Equation 8.8.1: i qiri. Use the information below to generate a citation. Dip ole moment is measured in Debye units, which is equal to the distance between the charges multiplied by the charge (1 Debye eq uals 3.34 × 10 30 Cm ). Then you must include on every digital page view the following attribution: Thus, the geomagnetic equator is defined as the line around Earth’s surface where the actual field is horizontal. These properties lead to definitions of equator and pole in Earth’s more complex field. If you are redistributing all or part of this book in a digital format, The magnetic field of a dipole is vertical along the polar axis and horizontal along the equator, as can be seen from the bar-magnet figure. Then you must include on every physical page the following attribution: If you are redistributing all or part of this book in a print format, Location: 539.1/M3 (Vol 1) Joule Quick Ref 541.377 MCC (Vols 2 & 3). Want to cite, share, or modify this book? This book uses the However, there is a torque about the midpoint between the two charges: The forces on the two charges are equal and opposite, so there is no net force on the dipole. Suppose we have the situation depicted in Figure 5.32, where we denote the distance between the charges as the vector d →, d →, pointing from the negative charge to the positive charge. Rotation of a Dipole due to an Electric Fieldįor now, we deal with only the simplest case: The external field is uniform in space. The value of the Dipole Moment is listed Under Calculated Quantities in the Overview section, if calculated. We assume that the dipole is a permanent dipole it exists without the field, and does not break apart in the external field. (In this context, “close” means that the distance d between the two charges is much, much less than the distance of the field point P, the location where you are calculating the field.) Let’s now consider what happens to a dipole when it is placed in an external field E → E →. Explain the physical meaning of the dipole momentĮarlier we discussed, and calculated, the electric field of a dipole: two equal and opposite charges that are “close” to each other. ![]() Define and calculate an electric dipole moment.By the end of this section, you will be able to: ![]()
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