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(b) The field line diagram of a dipole. In both diagrams, the magnitude of the field is indicated by the field line density. The field vectors (not shown here) are everywhere tangent to the field lines. Although it may not be obvious at first glance, these field diagrams convey the same information about the electric field as do the vector ...
- 1.4: Dipoles
Example 1.4.1. A dipole is a distance r from an...
- 11.6: Electric Dipole
Figure 11.6.2: Electric Dipole Moment. The magnitude of the...
- 1.4: Dipoles
An electric dipole is defined as a couple of opposite charges q and –q separated by a distance d. By default, the direction of electric dipole in space is always from negative charge -q to positive charge q. The midpoint q and –q is called the centre of the dipole. The simplest example of an electric dipole is a pair of electric charges of ...
- 12 min
- The SI unit of dipole moment is Coulomb.meter
- A pair of electric charges of two opposite signs and equal magnitude separated by a distance.
- The electrons in an atom revolve around the nucleus in a closed orbit. The orbit around the nucleus is equivalent to a current loop as the electron...
- Electric Charge is the property of subatomic particles that causes it to experience a force when placed in an electric and magnetic field.
Electric field lines of two opposing charges separated by a finite distance. Magnetic field lines of a ring current of finite diameter. Field lines of a point dipole of any type, electric, magnetic, acoustic, etc. A physical dipole consists of two equal and opposite point charges: in the literal sense, two poles.
- Electric Dipole Moment. The magnitude of the dipole moment is defined as the product of the absolute value of one of the two charges, multiplied by the distance separating the two charges
- Field of a Dipole.
- Dipole in a Uniform Field. We begin by considering the force on the dipole. Certainly each individual charge feels a new force from the field, but the charges are equal in magnitude, and the forces act in opposite directions, so the net force on it is zero.
- Torque on a Dipole. Multiplying the forces by the moment arms, and summing, we find that the magnitude of the torque on this dipole is: \[ \tau = 2\left[ qE\frac{d}{2}\sin\theta\right] = qd\;E\;\sin\theta \]
Apr 18, 2024 · Figure 11.6.2: Electric Dipole Moment. The magnitude of the dipole moment is defined as the product of the absolute value of one of the two charges, multiplied by the distance separating the two charges: ∣∣ p→∣∣ ≡ q d (11.6.1) (11.6.1) | p → | ≡ q d. The direction of the dipole moment is that it points from the negative charge ...
Figure 5.29 (a) The electric field line diagram of a positive point charge. (b) The field line diagram of a dipole. In both diagrams, the magnitude of the field is indicated by the field line density. The field vectors (not shown here) are everywhere tangent to the field lines.
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Electric Field Lines as an Invisible Reality. It has been emphasized in Lesson 4 that the concept of an electric field arose as scientists attempted to explain the action-at-a-distance that occurs between charged objects. The concept of the electric field was first introduced by 19th century physicist Michael Faraday.
