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This chapter focuses on the behavior of the electric field, current density, and the potential in conducting and nonconducting media. In the absence of the field E 0 , the net charge on the confined body is zero. The field in the absence of the inhomogeneity, E 0 , is usually called ...
大学物理英文课件:1-Electric field.pdf,Part III Electromagnetism Chapter1 Electric Field Chapter2 Conductors Dielectrics in Electric field Chapter3 Electric Current Chapter4 Magnetic Field Chapter5 Electromagnetic Induction Chapter6 Maxwell’s Equations
In 1963 Ridley postulated that under certain bias conditions circuit elements exhibiting a current- or voltage-controlled negative differential resistance will separate into coexisting domains with different current densities or electric fields, respecti
The models also showed that as the surface area of the microelectrode was increased, the gradient of the electric field within the tissue decreased, and the modeling of the electric field generated by a sharp tipped microelectrode by a theoretical point source electrode was valid only for ...
美 英 un.电流密度 英汉 un. 1. 电流密度 例句
generated from high-voltage direct-current transmission lines can induce the ion around the lines, which will increase the electric field and the ion current density and influence the environment nearby. Based on the finite-element method, an iterative algorithm to analyze the electric field and ...
An electric field oriented from sea water towards the ship, can develop an extraction work. The corrosion process was thus diminished, by a change in the ship's hull mass, due to a continuous tore of the material from its bulkheads. The issue that arises is an attenuation of the ...
The electric field in a region can be computed by using Maxwell’s laws of electrostatics [15], as shown in Equations 12.1 and 12.2: [12.1]∇·E=ρ∈0 [12.2]∇×E=0 where E is the electric field in V/m, ρ is the charge density and ∈0 is the permittivity of air. The ...
; induced electric fields and currents may also be induced by movement in a static magnetic field, where motion along a field gradient or rotational motion, either in a uniform field or in a field gradient, will result in the change of magnetic flux thereby inducing an electric current....