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because of flux produced in coil of inducter
AnswerThe potential difference (not 'potential') induced into a pure inductive component is proportional to the rate of change of current. The greatest rate of change of current occurs when the current waveform passes through zero (i.e. is at its steepest angle). So the voltage is maximum when the current is passing through zero -which means that the current is lagging the voltage by 90 degrees.
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Why voltage leads current in a inductor?
Eli the ice man. Voltage (E) before Current (I) in a coil (inductor)(L) Current (I) before Voltage (E) in a Cap. (C) Got it?
AC circuit that contains both resistance and inductance will have a.The current and voltage in phase b.current will lead the voltage c.current will lag the voltage d.voltage will lag the current?
a. the current and voltage in phase
What does lead mean in electronics?
A lead or lag applies to a signal due to active components to make it lead or lag the original signal
How does an inductor work?
Basically, an inductor is a coil of wire. The core of the inductor, the material it is would around, could be air, ferromagnetic material, or something else. The windings of the coil are usually copper wire, and they are coated with some kind of insulator, often enamel. It has two terminals, one at each end of the coil. Let's hook it up and see what happens.When we apply a voltage to the coil, current will want to move through the windings. But the instant that current wants to start moving, that current will want to form a magnetic field around its path of travel. This is a fundamental concept as regards moving charges; they always form a magnetic field around their path of travel.As the magnetic field begins to form, it will start to expand around the wire. As the field expands around one wire, that field will expand "across" other windings. Each winding will have an expanding magnetic field that "sweeps" or expands across all the other windings. As the expanding magnetic field around each wire sweeps all the other windings, it induces a voltage in those windings that opposes the voltage applied to the coil. The action of the opposing magnetic field wants to stop or prevent current flow. This is at the heart of how an inductor works, and this is the principle of induction in action. Let's follow through and tighten things up.As the field expands and generates (induces) that opposite voltage, the inductive action will limit the ability of the windings to conduct current flow. Eventually the current will flow, but only after a bit of time. There is a "delay" between the application of voltage to an inductor and that inductor's ability to pass current through itself. This is why we say that current lags voltagein an inductor. The current only flows "later" after the voltage rises and peaks. The delay spoken of here is only very brief, but when we apply AC to an inductor (pure inductance), the current will lag the applied voltage by 90 degrees.When voltage across an inductor peaks and falls off, the magnetic field that had built up will collapse. As this field collapses, it will again be sweeping all the windings in the coil, and will induce a voltage that wants to keep current flowing the way it was flowing already. The inductor is "resisting" a change in the current flow through it. And this is a fundamental characteristic of an inductor.And inductor is a device that resists a change in current flow throught it. And current flow through an inductor will lag the applied voltage by 90 degrees in AC circuits, provided there is no resistance in the circuit. This is boilerplate electronics, and the electronics student will see this information in some form on a test.
What does the Afrikaans word 'lag' mean?
To 'fall behind those advancing in front' (see 'straggle/straggler'); 'to develop at a retarded rate in comparison with the more advanced'. Thus the common usage 'to lag behind' is a wordy tautology one should avoid. Where else can you lag? In front? Above? To the side? Being implicit in the meaning, 'behind' is a useless appendage there only to remind the dull-witted of the meaning of 'lag'.
Why voltage leads current in a inductor?
Eli the ice man. Voltage (E) before Current (I) in a coil (inductor)(L) Current (I) before Voltage (E) in a Cap. (C) Got it?
How can current lag or lead voltage in an AC circuit isn't current a function of voltage etc?
Current can lag or lead voltage in an AC circuit when the load is what we call reactive. The idea that current is purely a function of voltage only applies when working with DC, or when working with purely resistive loads, such as light bulbs and toasters. Not so, when dealing with motors and power supplies. What happens is that an inductor resists a change in current. That means that, given a particular voltage and current at a particular instant of time, if you change the voltage, the current will not immediately follow - it will lag - because the inductor is a stored energy device. Similarly, a capacitor resists a change in voltage, which means that if you change the current, the voltage will not immediately follow - it will lag - also because the capacitor is a stored energy device. Flip over current and voltage in the analysis of a capacitor, and you find that the current will lead the voltage, as opposed to the inductor's current lagging the voltage. This causes the phenomenon of power factor, which is basically the cosine of the phase angle between voltage and current. Power factor is the ratio of apparent power to true power.
What is the reason behind the lag of current in inductor lead in capacitor?
The physics of the energy storage. In an inductor, the current must fight against the stored energy in the magnetic field which tries to keep the current unchanged. Any change in the current lags the voltage since the stored energy impacts the adjustment. Similarly, the "displacement" current in a capacitor leads the electric field buildup in a capacitor, causing the voltage to lag the current until the stored energy building up in the electric field stabilizes. Any change in the voltage is first preceded by a change in the displacement current.
How current lags the voltage in inductor?
In a perfect inductor (one with no series internal resistance), the current lags the voltage by 90 degrees. If the inductor has series internal resistance, then the current will lag the voltage by less than 90 degrees - the more the resistance in series with the inductor, the smaller the angle. The tangent of the angle can be found from the ratio of the inductive reactance of the inductor to the DC resistance of the inductor. That is, Tan (phase angle) = (2 x pi x frequency (Hz) x inductance (H)) divided by resistance (ohms) eg, a 1 henry, 100 ohm inductor on 60Hz would give: (2 x pi x 60 x 1) / 100 = 3.77; tan-1(3.77) gives 75 degrees lag of current behind voltage. The cosine of this angle gives the 'power factor' for the inductor - that is, the amount of useful energy dissipated in the inductor. Cos 75 is about 0.25 - so 25% of the energy actually does useful work (heat) - the rest of the energy (75%) is returned to the supply mains when the inductor discharges its magnetic field.
What is lead and lag angles?
Leading angle means that the current lead voltage by 90 degree,which implies a capacitve load. while,lagging angle mean when the current lag the voltage by 90 degree or when the voltage lead the current by 90 degree.which implies an inductive load.
AC circuit that contains both resistance and inductance will have a.The current and voltage in phase b.current will lead the voltage c.current will lag the voltage d.voltage will lag the current?
a. the current and voltage in phase
May I know the properties of an inductor?
Some of them are: 1. Inductor temporarily stores energy in form of magnetic field. It is given by E=½LI² here L is inductance & I is current. 2. Inductor causes current to lag voltage by 90°. 3. Inductor consumes reactive power. 4. Inductor oppose current change in circuit for AC only. Fo DC it act as simple wire. 5. Inductors are used for blocking the AC while passing the DC. They are known as chokes. 6. Inductors are used to create magnetic fields in electrical machines for the purpose of energy conversion.
Does the current lead or lag the voltage in a series A C circuit containing a large value of capacitance?
ICE current leads the voltage by 90 degrees.
What is meant by lead and lag?
The terms, 'lagging' and 'leading', describe the relationship between a circuit's load current and supply voltage. They describe whether the load current waveform is leading or lagging the supply voltage -always the current, never the voltage. Inductive loads always cause the current to lag the supply voltage, whereas capacitive loads always cause the current to lead the supply voltage.
What does lead mean in electronics?
A lead or lag applies to a signal due to active components to make it lead or lag the original signal
Power factor lead or lag?
By definition, the terms 'leading' and 'lagging' refer to what the load current is doing with respect to the supply voltage. So, for a 'lagging power factor', it is the current that is lagging.
What is the opposite of lag?
lead
