Basics of Electrical Engineering
Atom It has a central core known as nucleus. It contains two types of particles one is known as proton and carries positive charge. The other is neutron, which is electrically neutral, that is it does not carries any charge and around the nucleus the electron which carry negative charge revolves in an elliptical path. The atoms are electrically neutral. The total number of neutron and proton are known as atomic weight. Current Current is a flow of electrons. The standard unit of current is ampere (A). One ampere of current represents one coulomb of electrical charge (6.24 x 10^18 charge carriers) moving past a specific point in one second Potential Difference Potential difference is work done to move a unit positive charge. The basic unit of measure for potential difference is voltage (V). Resistance Resistance is the opposition that a substance offers to the flow of electric current. The standard unit ...