Question

What is the source of electric current?

Answer 1

1. A cell is a source of electric current. The chemicals stored in a cell produce electricity; that is, chemical energy changes into electrical energy. A cell consists of two terminals: a positive terminal and a negative terminal. However, a cell cannot provide energy of high magnitude.

2. Another source of electricity are big powerhouses, which produce a large amount of energy using the kinetic energy of water or thermal energy of coal.