what is the relation between power factor and current?
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Power factor is the relationship (phase) of current and voltage in AC electrical distribution systems. Under ideal conditions current and voltage are “in phase” and the power factor is “100%.” If inductive loads (motors) are present, power factor less than 100% (typically 80 to 90%) can occur.
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When a circuit element 'X' is connected across an AC source, a current of 2 A flows through it and this current is in phase with the applied voltage. When another element 'Y' is connected across the same AC source, the same current flows in the circuit but it leads the voltage by π 2 radians.
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The relationship between Voltage, Current and Resistance forms the basis of Ohm's law. In a linear circuit of fixed resistance, if we increase the voltage, the current goes up, and similarly, if we decrease the voltage, the current goes down.
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Current is equal to the voltage divided by resistance of the circuit, therefore, the greater the voltage for the same resistance creates more current, therefore more energy, some of which is released as heat which will raise the temperature. There is NO relationship between temperature, voltage and current.
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Relation between Current, Temperature and Voltage is that when Temperature increases Current will decrease and Voltage will increase. And vice versa.
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In other words, Energy = power x time and Power = voltage x current. Therefore electrical power is related to energy and the unit given for electrical energy is the watt-seconds or joules. Electrical power can also be defined as the rate of by which energy is transferred.
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unity power factor. [′yü·nəd·ē ′pau̇·ər ‚fak·tər] (electricity) Power factor of 1.0, obtained when current and voltage are in phase, as in a circuit containing only resistance or in a reactive circuit at resonance.
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Alternating current - An electric current which magnitude changes and that reverses its direction many times a second at regular intervals, typically used in power supplies. Direct current - An electric current which magnitude is either constant or variable but direction of current is always same.
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The relationship between the Potential difference and Flow of current is : I=V/R. Here, I implies Current flowing, V implies Voltage and, R implies Resistance in the circuit. It means, current is directly proportional to the voltage, and inversely proportional to resistance.
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AC single phase volts to kilowatts calculation formula The power P is equal to power factor of 0.8 times current of 3 amps times voltage of 110 volts divided by 1000.
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To find out, we need to be able to calculate the amount of power that the resistor will dissipate. If a current I flows through through a given element in your circuit, losing voltage V in the process, then the power dissipated by that circuit element is the product of that current and voltage: P = I × V.
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APFC or Automatic Power Factor Control Panels are mainly used for the improvement of Power Factor. Power Factor can be explained as ratio of active power to apparent power and it is a key factor in measuring electrical consumption. Everyone knows that how costly electricity has become in present time.
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Power in AC Circuits. In a DC circuit, the power consumed is simply the product of the DC voltage times the DC current, given in watts. However, for AC circuits with reactive components we have to calculate the consumed power differently.
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Working Power is expressed as kilowatts (kW) and is the “true”or“real” power used by all electrical appliances to perform the work of heating, lighting, moving, etc. Resistive loads are loads that use true or real power. ... Power Factor is the ratio of working power to apparent power, or kW / kVA.
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Power is the product of Voltage and Current, “Amps ——- Power = Volts X Amps. Power, W = V^2/R, where R is the resistance. It is a directly proportional relationship.
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The kW to kVA Formula: Apparent power (kVA) x power factor (pf) = actual power (kW) e.g. 100 kVA x 0.8 = 80 kW.
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Ohm's law states that the electrical current (I) flowing in an circuit is proportional to the voltage (V) and inversely proportional to the resistance (R).