These notes are meant to finish class on 28 January... force on an electric dipole in a non-uniform electric field...
... We could do exactly the same thing with the potential energy of the dipole. That is U = qΦ(x + b/2) − qΦ(x − b/2) = qb · ∇Φ(x) = p · ∇Φ(x) = −p · E(x) for a dipole located at the position x. (The last step just makes use of the definition of the electric field in terms of the gradient of the electri ...
... We could do exactly the same thing with the potential energy of the dipole. That is U = qΦ(x + b/2) − qΦ(x − b/2) = qb · ∇Φ(x) = p · ∇Φ(x) = −p · E(x) for a dipole located at the position x. (The last step just makes use of the definition of the electric field in terms of the gradient of the electri ...
Solution
... 1. Figure 1 shows the electric field lines for two point charges separated by a small distance. (i) Determine the ratio q1 /q2 . (ii) What are the signs of q1 and q2 ? Solution (i) The magnitude of q2 is three times the magnitude of q1 because 3 times as many lines emerge from q2 as enter q1 . Then ...
... 1. Figure 1 shows the electric field lines for two point charges separated by a small distance. (i) Determine the ratio q1 /q2 . (ii) What are the signs of q1 and q2 ? Solution (i) The magnitude of q2 is three times the magnitude of q1 because 3 times as many lines emerge from q2 as enter q1 . Then ...
Electricity & Optics Physics 24100 Lecture 21 – Chapter 30 sec. 1-4
... Maxwell’s Displacement Current • We can think of the changing electric flux through 3 as if it were a current: ...
... Maxwell’s Displacement Current • We can think of the changing electric flux through 3 as if it were a current: ...
Physics with Matlab and Mathematica Exercise #12 27 Nov 2012
... This exercise can be done in either matlab or mathematica. This is the last in-class exercise. The idea is to get a short introduction to “visualization” of function of two dimensions. Remember that we are just scratching the surface here. The sample command files give you ways to produce “contour” ...
... This exercise can be done in either matlab or mathematica. This is the last in-class exercise. The idea is to get a short introduction to “visualization” of function of two dimensions. Remember that we are just scratching the surface here. The sample command files give you ways to produce “contour” ...
Ch. 8 Sections 8.1-8.3 Powerpoint
... •The distance where the energy is minimal is called the bond length. •Bond length: the distance between the nuclei of the two atoms connected by a bond or the distance where the total energy of a diatomic molecule is minimal. ...
... •The distance where the energy is minimal is called the bond length. •Bond length: the distance between the nuclei of the two atoms connected by a bond or the distance where the total energy of a diatomic molecule is minimal. ...
Chapter 08
... • Electrons flow from negative terminal to positive terminal (provided by the chemical energy of the battery) -- negative to positive • Open switch – not a complete circuit and no flow of current (electrons) • Closed switch – a complete circuit and flow of current (electrons) exists • Closed Circuit ...
... • Electrons flow from negative terminal to positive terminal (provided by the chemical energy of the battery) -- negative to positive • Open switch – not a complete circuit and no flow of current (electrons) • Closed switch – a complete circuit and flow of current (electrons) exists • Closed Circuit ...
B - Purdue Physics
... Charges and fields of a conductor • In electrostatic equilibrium, charges inside a conductor do not move. Thus, E = 0 everywhere in the interior of a conductor. • Since E = 0 inside, there are no net charges anywhere in the interior. Net charges can only be on the surface(s). ...
... Charges and fields of a conductor • In electrostatic equilibrium, charges inside a conductor do not move. Thus, E = 0 everywhere in the interior of a conductor. • Since E = 0 inside, there are no net charges anywhere in the interior. Net charges can only be on the surface(s). ...
Ch 24 Electric Potential
... On nonspherical conductors, a surface charge does not distribute itself uniformly over the surface of the conductor. At sharp points or edges, the surface charge density—and thus the external electric field, —may reach very high values. The air around such sharp points or edges may become ionized, p ...
... On nonspherical conductors, a surface charge does not distribute itself uniformly over the surface of the conductor. At sharp points or edges, the surface charge density—and thus the external electric field, —may reach very high values. The air around such sharp points or edges may become ionized, p ...
Ratio of Mass to Charge for an Electron
... The Millikan oil drop experiment is a very tedious experiment to conduct and we are not asking you to so. Instead, you will analyze some sample data collected by undergraduate students at a university. But first, you need to familiarize yourself with the experimental set up and procedure. The appar ...
... The Millikan oil drop experiment is a very tedious experiment to conduct and we are not asking you to so. Instead, you will analyze some sample data collected by undergraduate students at a university. But first, you need to familiarize yourself with the experimental set up and procedure. The appar ...
Electric charge
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charges: positive and negative. Positively charged substances are repelled from other positively charged substances, but attracted to negatively charged substances; negatively charged substances are repelled from negative and attracted to positive. An object is negatively charged if it has an excess of electrons, and is otherwise positively charged or uncharged. The SI derived unit of electric charge is the coulomb (C), although in electrical engineering it is also common to use the ampere-hour (Ah), and in chemistry it is common to use the elementary charge (e) as a unit. The symbol Q is often used to denote charge. The early knowledge of how charged substances interact is now called classical electrodynamics, and is still very accurate if quantum effects do not need to be considered.The electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. Electrically charged matter is influenced by, and produces, electromagnetic fields. The interaction between a moving charge and an electromagnetic field is the source of the electromagnetic force, which is one of the four fundamental forces (See also: magnetic field).Twentieth-century experiments demonstrated that electric charge is quantized; that is, it comes in integer multiples of individual small units called the elementary charge, e, approximately equal to 6981160200000000000♠1.602×10−19 coulombs (except for particles called quarks, which have charges that are integer multiples of e/3). The proton has a charge of +e, and the electron has a charge of −e. The study of charged particles, and how their interactions are mediated by photons, is called quantum electrodynamics.