Electric Conductivity, Resistance and Ohm’s Law
https://www.electronics-lab.com/article/electric-conductivity-resistance-and-ohms-law/
Introduction Consider a piece conductor in the shape of a cylinder with a voltage applied across its ends, as depicted in Figure 1. When a potential difference (voltage ∆V) is applied between two points in a conductor, an electric field E is created, and free electrons (e–) in the conductor feel a force due to the electric […]
Electrostatic Fields In Material Bodies
https://www.electronics-lab.com/article/electrostatic-fields-in-material-bodies/
Electronic Polarization Of Atoms In Static Electric Field In previous discussions, we have considered the effect of an electric field on charges in free space. In this section, we shall study the effect of electric fields on material media. Matter, which is made of atoms or molecules, comes in many varieties—solids, liquids, gases, metals, woods, […]
Electric Potential In Uniform Fields
https://www.electronics-lab.com/article/an-overview-on-electrostatics-electric-potential-in-uniform-fields/
Electric Field Due To Uniformly Distributed Charges Let’s consider a configuration of two nonconducting planes that are oppositely charged and placed in parallel to each other at a small distance. Suppose that the positive and negatively charged planes are set up facing each other. Figure 1 shows part of two infinitely large, nonconducting plane sheets […]
Electric Potential In Nonuniform Fields
https://www.electronics-lab.com/article/an-overview-on-electrostatics-electric-potential-in-nonuniform-fields/
Electric Potential Due To Point Charges In physics, electric fields are regions in space where an electric force is experienced by a charged object due to the presence of another charged object. These fields can be either uniform or non-uniform. A uniform field is one where the field strength (or the force) is the same […]
The Electric Field
https://www.electronics-lab.com/article/an-overview-of-electrostatics-the-electric-field/
Introduction The electrostatic force, which we discussed in the previous article, is capable of acting through space, producing an effect even when there isn’t any physical contact between the involved charged objects. This phenomenon is known as action at a distance. Field forces can be discussed in a variety of ways, but an approach developed […]