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Example 21-17: Dipole in a field. The dipole moment of a water molecule is 6.1 x 10-30 C·m. A water molecule is placed in a uniform electric field with magnitude 2.0 x 105 N/C. (a) What is the magnitude of the maximum torque that the field can exert on the molecule? (b) What is the potential energy when the torque is at its maximum?
In these notes, I write down the electric field of a dipole, and also the net force and the torque on a dipole in the electric field of other charges. For simplicity, I focus on ideal dipoles — also called pure dipoles — where the distance a between the positive and the negative
electric dipole. The simplest molecular dipole consists of a pair of opposite, unit electric charges (of magnitude +q and -4) separated by a vector distance S; in this case, the molecular dipole moment m (which is an intensive property) is given as m = qs and has units of C m. For a complex protein molecule, such as that illustrated
18 Απρ 2024 · Definition. We know well how to deal with single point charges and an infinite charged plan which generates a simple form of an electric field, but of course physical systems rarely behave in such a simple way. What we are going to look at here is a model for two point charges that are equal in magnitude and opposite in sign. The reason this is ...
An electric dipole is a +Q and a Q separated by a vector a Very common system, e.g. in atoms and molecules The electric dipole moment is p= Qa pointing from Q to +Q
Define and calculate an electric dipole moment. Explain the physical meaning of the dipole moment. Earlier we discussed, and calculated, the electric field of a dipole: two equal and opposite charges that are “close” to each other.
On the atomic and sub-atomic scale, the magnetic and electric dipole moments reveal structural information about the systems. On a much larger scale, dipole antennae are important in radio transmission and reception. In this module, we will discuss one of the two types of dipoles, the electric dipole.
