Use Task Manager. Another way of opening File Explorer is to use the Task Manager. You'll have to open Task Manager, switch to More details, select the File menu and then click or tap on Run new task. Inside the Create new task window, write explorer and press Enter or OK.
Sources of electric field. Causes and description. Electric fields are caused by electric charges or varying magnetic fields. The former effect is described by Gauss's law, the latter by Faraday's law of induction, which together are enough to define the behavior of the electric field as a function of charge repartition and magnetic field.
Magnetic and electric fields exist nearly everywhere, and the following is a brief description of what these fields are, how they are created, and what effects they produce. The concept of an electric field arose when electrons were observed to repel other electrons but attract protons.he second effect is that a changing magnetic field can create an electric field. This is the basis of power transformers and electric power generation. One coil of wire (or one electromagnet as in Fig. 5) is placed close to another.