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The physics formula for calculating rate of energy conversion.
Electrical engineers use it in calculating power factor and electrical load distribution when dealing with 3 phase power connections.
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The formula for calculating power if you are given a magnetic field is sub 43
Power is energy divided by time, P=E/t.
You divide work by time.
The physics formula for calculating rate of energy conversion.
Assuming an incandescent bulb and a 120 volt supply the formula is Watts = Volts x Amps x Power Factor where PF = 1 for resistive load. Amps = 400 / 120.
LPF is Low power factor, which is used to calculate overall power in VA (voltamps) kind of like calculating overall power in watts.
Power factor is defined as the ratio of real power over total power. Total power is the vector sum of real and reactive power.
Formula for calculating the area of sphere is : 4 * pi * r * r
It isn't clear what you mean by "the following". Power is energy divided by time - the rate at which energy is converted or transferred.
Power Factor is one of most significant parameter in calculating AC Power. As we know it is cosine of angle between AC Voltage and Current it comes in picture while calculating power in AC circuits Power In AC (P) = Voltage (V) X Current (V) X Power Factor Let us take an example of Power with Power factor and without power factor for same circuit. Let Us assume V = 125 Volts I = 1 Amp Power Factor = 1 Then P = 125X1X1= 125 Watts But for any circuit when Power factor is below 1, to execute same power, Circuit has to draw more current. for example P = 125X 1.25 X 0.8 = 125 Watts In first example power factor of the circuit was unity = 1 and in that condition current of the circuit was 1 amp whereas in second example power factor of the circuit is 0.8 due to which current of the circuit increases to 1.25 amp to execute the same power. Now due to increase in current of the circuit many factors are affected like heat loss, Conductor's specification , Class of insulation etc. Thus it can be concluded after going through above explanation that power factor play a significant role in AC power calculation as well as in actual practices.
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