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A resistor is responsible for dissipating power in the form of warmth.
In electronics, a resistor is frequently utilized to control the existing. Resistors are needed to avoid short circuits.
In the power system analysis, the resistors are not browsed. This is sensible because the resistors cause a loss of power in the form of warmth.
Each element that carries out electrical energy has a resistance. The absolutely no resistance can just be gotten to at absolute zero.
There are many factors to place a resistance in a circuit. among the applications is the decrease of the stage difference between the voltage and the current phasors, this is mainly done so that the reactive power circulating in the circuit is as very little as possible. It must constantly be kept in mind that this (decrease of the stage angle) constantly includes a price, ie an increase in power losses due to the enhancement of resistors.
Resistance is a two-terminal passive element connected to an electrical circuit to produce an electric resistance in this circuit. in an electronic circuit, the resistors are utilized to limit the present, develop a loss, produce a voltage drop in a circuit, made use of to split the voltages, polarize active aspect and it can be taken into consideration as tons of an electrical circuit.
The basic feature of the resistor is to supply a resistance (barring) in the electron circulation. so you can use it to control the circulation of electrons, that is, you can control the current with a circuit. When you put a resistor in the course of electrons, lots of electrons show up at one end of the resistor that is a lot closer to the adverse terminal of the battery and the other end of the resistor has a lack of electrons, which additionally causes a potential distinction. it can as a result be utilized as a prospective reel. it additionally generates warmth as a thermal device to reduce voltage as well as current, for example, I'll tell you that we have a source with an outcome voltage of 5 volts and also 0.75 amperes which we have suggested the input voltage or the volt max that it can take to operate over the optimum voltage can be damaged or reduced because if we see that we drove with a maximum voltage of 3.3 volts which we have a source voltage of 5 volts if we connect the 5 volts directly, the led can be damaged, so we must reduce the resource voltage from 5 volts to 3.3 how can we do?. exist any digital elements to minimize the voltage? indeed we exist in a resistance whereby taking resistance of 330 homs we can obtain a voltage of 3.3 volts from the source voltage where we can connect to led.
Resistance is a product that opposes or stands up to something, when it comes to electrical circuits, resistors are made use of to oppose the circulation of existing. now, you may be questioning why we must oppose the circulation of current? but in cases where the lots attached to the outcome is larger, ie it attracts a greater existing, if such a greater present trip through a cord, it can shed, and also there is a risk of a short circuit in order to limit the current flow resistances used.

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