Electrical Circuits Terms
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The voltage drop in an inductor due to opposition is dictated by:
current


the property of an electric circuit as a result of which an electromotive force is created by a change of current in the same circuit
inductance

a property of a conductor by virtue of which the passage of current is opposed, causing electric energy to be transformed into heat:
resistance

equal to the voltage across the conductor divided by the current flowing in the conductor
resistance

element where voltage and current are in phase w/ peak values
purely resistive element

the opposition of inductance and capacitance to alternating current, expressed in ohms:
reactance

equal to the product of the sine of the angular phase difference between current and voltage and the ratio of the effective voltage to the effective current
reactance


the total opposition to alternating current by an electric circuit
impedance

equal to the square root of the sum of the squares of the resistance and reactance of the circuit and usually expressed in ohms
impedance

the flow of current source and magnetic field
opposition

iL=
current in ac circuits

A measure of the ability of a configuration of materials to store electric charge.
capacitance

the number of cycles or completed alternations per unit time of a wave or oscillation.
frequency

the number of periods or regularly occurring events of any given kind in unit of time, usually in one second.
frequency

the number of times that a periodic function or vibration repeats itself in a specified time, often 1 second. It is usually measured in hertz ν, f
frequency

electric potential difference between two points of an electric field.
voltage

the drop of electrical potential or potential difference on the load in an electrical circuit.
voltage drop

ω =
 angular velocity measured in radians per second (rad/s)
 2pif


the rate of energy consumption in an electrical circuit
electrical power

The power that is used to do the work on the load
 real power
 P = Vrms Irms cos φ

the power that is wasted and not used to do work on the load
 reactive power
 Q = Vrms Irms sin φ

the power that is supplied to the circuit
 Apparent power
 S = Vrms Irms

P^2 + Q^2 = S^2
Real power, reactive power and apparent power

The ratio of the real power that is used to do work and the apparent power that is supplied to the circuit:
The power factor can get values in the range from 0 to 1.

When all the power is reactive power with no real power (usually inductive load)  the power factor is
0

When all the power is real power with no reactive power (resistive load)  the power factor is
1

AC:
equal to the absolute value of the cosine of the apparent power phase angle φ (which is also is impedance phase angle):
Power factor

energy is directly transferred by the movement of electrons or ions
conductive

Energy is transferred by electromagnetic field
inductive