#electric #ntpc #khangs Electric Current ( विद्युत धारा ) | Transformer|Ac Dc | Rectifier | Khan GS Research Centre Electric current: -An electric current is a flow of electric charge. Conductor & Insulator: In a conductor, electric current can flow freely, in an insulator it cannot. Ac /Dc: direct current (DC):- the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. Rectifier: An electrical device which converts an alternating current into a direct Current. Transformer: A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Inverter: a device that converts Dc to Ac. Teacher - Khan Sir Address - Kishan Cold Storage, Patna 800006 Call - 8757354880, 8877918018