## Electrical Power and Energy

Even though electric energy is a single element, it can present itself in different ways. Direct current circuits, also referred to as electrical power, in DC circuits can be achieved by means of the voltage (U), current (I) and resistance (R) ratio, all of which are involved in the circuit.

When a resistor is connected to a mains with voltage, it can pass an electric current that will be able to completely heat the resistance. This resistance will absorb the electric energy that is transformed into heat, which will also be a form of energy, in the same way, an electric motor can absorb the electrical energy of the network, transforming it into mechanical energy available at the tip of the shaft.  Boston Gear 31974

Then, in the alternating current circuits, in the resistors, the higher the mains voltage, the higher the current and the faster the resistance will heat up, that is, this process shows that the electrical power will always be higher. The electrical power absorbed from the grid in the case of resistance shall be calculated by multiplying the mains voltage by the current, if the resistance or load is single-phase.