Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is the thermal effect of electric current?Definition of thermal effect of currentWhen the current passes through the resistance, the current does work and consumes electrical energy, generating heat.Calculation formulaQ=I^2 Rt I - The current passing through A conductor in amperes (A); R -- the resistance of the conductor, in ohms (Ω); t -- the time for the current to pass through the conductor, in seconds (s); Q - The heat generated by the current on the resistance, in joules (J)Apply Inca

What is short-circuit Current?Short circuit current definitionShort-circuit current is the current flowing through the power system when an abnormal connection occurs between phase and phase or between phase and ground (or neutral line) during operation. The value can be much greater than the rated current and depends on the electrical distance between the short circuit point and the power supply.Type of short circuit Three-phase short circuit Two-phase short circuit Single to ground short circu

What is electric current?Current definitionIn electromagnetism, the amount of electricity passing through any cross section of the conductor in unit time is called the current intensity, referred to as current, the current symbol is I, the unit is amperes, referred to as "ampere".The cause of current formationA current is formed when the free charge in a conductor moves in a regular direction under the action of an electric field force.Direction of currentThe direction of positive charge directi

What is Electric Current?Electric current is defined as a stream of charged particles—such as electrons or ions—moving through an electrical conductor or space. It is the flow rate of electric charge through a conducting medium with respect to time. Electric current is expressed mathematically (e.g. in formulas) using the symbol “I” or “i”. The unit for current is is ampere or amp. This is represented by A.Mathematically, the flow rate of charge with respect to time can be expressed as,In other