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The voltage drop in an inductor due to opposition is dictated by:
current
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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
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a property of a conductor by virtue of which the passage of current is opposed, causing electric energy to be transformed into heat:
resistance
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equal to the voltage across the conductor divided by the current flowing in the conductor
resistance
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element where voltage and current are in phase w/ peak values
purely resistive element
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the opposition of inductance and capacitance to alternating current, expressed in ohms:
reactance
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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
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the total opposition to alternating current by an electric circuit
impedance
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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
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the flow of current source and magnetic field
opposition
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iL=
current in ac circuits
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A measure of the ability of a configuration of materials to store electric charge.
capacitance
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the number of cycles or completed alternations per unit time of a wave or oscillation.
frequency
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the number of periods or regularly occurring events of any given kind in unit of time, usually in one second.
frequency
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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
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electric potential difference between two points of an electric field.
voltage
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the drop of electrical potential or potential difference on the load in an electrical circuit.
voltage drop
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ω =
- angular velocity measured in radians per second (rad/s)
- 2pif
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the rate of energy consumption in an electrical circuit
electrical power
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The power that is used to do the work on the load
- real power
- P = Vrms Irms cos φ
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the power that is wasted and not used to do work on the load
- reactive power
- Q = Vrms Irms sin φ
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the power that is supplied to the circuit
- Apparent power
- S = Vrms Irms
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P^2 + Q^2 = S^2
Real power, reactive power and apparent power
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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.
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When all the power is reactive power with no real power (usually inductive load) - the power factor is
0
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When all the power is real power with no reactive power (resistive load) - the power factor is
1
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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
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energy is directly transferred by the movement of electrons or ions
conductive
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Energy is transferred by electromagnetic field
inductive
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