electrostatic charges

The electric field or electric field strength is the electrostatic force acting on a small positive test charge placed at that point. If is the electrostatic force experienced by a test charge q at a point, then the electric field intensity at that point is g..

The mixture of lead sulphide and Zinc sulphide ores are concentrated by the method of electrostatic concentration. The powdered ore is fed upon a roller in a thin layer and subjected to the influence of a electrostatic field. Lead sulphide being a good conductor gets charg..

Electric current - is a means by which electrical energy is transferred from one place to another for utilisation. Charges in motion constitute an electric current. We know from electrostatics that when an isolated conductor is placed in an electric field, the charges ..

Energy Stored in a Capacitor - While charging a capacitor, a battery transfers positive charge from negative to the positive plate. So some work is done in transferring this charge, which is stored in the capacitor in the form of electrostatic energy. This en..

When the positively charged body is brought near the two cans A and B, the electrons (-ve charges) from both the cans are attracted and get concentrated on B which is near R. The can A which has lost the electrons is left with an equal amount of positive charge. When t..

Ionic compounds have high melting and boiling points. A large amount of energy is required to break the crystal lattice, because the ions are held together by strong electrostatic forces of attraction. The variation in melting point depends upon the charges on the ions and ioni..

Coulomb's Law - It states that "the electrostatic force between two electric charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them ..

Then term 'Xerography'; the use of Photoelectric phenomena to transfer an image from one sheet of paper to another comes from the Greek words for "dry" and "writing". Dry copying is based on the principle that materials with opposite electrical charges attract one another and that some ma..

Gauss's theorem in electrostatics indicates that isolated charges exist and that electric lines of force do not form closed loops. The situation is different in magnetism. The Gauss's law in magnetism therefore will ..

The above figure shows the electric field of a positive point charge. The electric field is directed away from the charge and potential is positive at any finite distance from the charge. If we move away from the charge, i.e., in the direction of..