THE SHORT-CIRCUIT

Previously, to explain what the electrical current was, we have commented that connecting the ends of a battery with a copper wire the circulation of electrons is produced. However, this practice is strongly inadvisable, since, being a thread that has practically no resistance, electrons find no obstacle limiting their passage and electric current would be very high, lowing battery quickly, and producing a short-circuit.

In short, a short-circuit occurs when two points between which there is a certain voltage, are connected with a conductive element with virtually no resistance.

Short-circuits are very dangerous, therefore, there are elements of protection in our homes; elements which, if a short-circuit happens, would open the circuit interrupting the power supply . Otherwise, due to the high current, the cables and wires may burn and cause fire.