# How can a inductor remain charged?

It will not remain "charged" for long. The speed of collapse of the magnetic field is related to the inductance, in Henries. A (physically) large inductor will retain energy for longer. (note that there is no "charge")

### What is the output when a fully charged capacitor connected parallel to the inductor?

When an inductor is suddenly connected in parallel with a charged capacitor, the current through the inductor and the voltage between its ends will oscillate at the frequency of F = 1 / 2 pi sqrt(L x C) . With real-world components, having resistance and connected through wire that has resistance, the amplitude of the oscillation will steadily decrease as energy is lost in the circuit, and the oscillation will eventually become too small to…

### Why sepic called single ended converter?

Single ended is referred to converters with single switch topology. SEPIC has only one switch and hence named Single ended primary inductor converter. (Primary inductor because the inductor is charged during ON cycle of the switch) For example, There are double ended flyback topologies with two switches. It is named as double ended because it contains two switches.

### How long does a DUI remain on an FBI check?

If you were charged criminally it will always remain on your record (I am uncertain as to whether a criminal DUI offense can be expunged or not - you would have to check on this) - if it was charged as a traffic offense it WILL always remain on your driving record. Your driving record is a COMPLETE history of your driving life and does NOT go away.

### Is there no induced voltage in an inductor unless the current is changing?

In an ideal inductor, no, there is no voltage induced across an inductor unless the current in the inductor is changing. However, since there are no ideal inductors nor power supplies, eventually an inductor will draw a constant current, i.e. the limit of the power supply; and, since no inductor has zero ohms at equilibrium, that current will translate to voltage.

### What is working principle of inductor?

A changing current through an inductor induces a voltage into the inductor, the direction of which always opposes the change in that current. So, in a d.c. circuit, an inductor will oppose (not prevent) any rise or fall in current, although the magnitude of that current will be determined by the resistance of that inductor, not by its inductance. In an a.c. circuit, because the current is continuously changing both in magnitude and in direction…

### Does inductor allow ac to pass through it?

Yes, with some difficulty. You can think of an inductor as a kind of "AC resistor" in a way. The higher the frequency of the AC, the more difficulty it has passing through the inductor. If you apply AC voltage across an inductor, where V = voltage of the AC f = frequency of the AC L = inductance of the inductor, then the AC current through the inductor is I = V/2 pi f…

### What happens when closing and breaking an inductive circuit?

When you close an inductive circuit, since an inductor resists a change in current, the initial reaction of the load is to look like a high resistance. As current builds, the resistance falls. With a theoretical source and inductor, current would eventually reach infinity, that is after infinite time, but practical sources and inductors will reach a plateau current. When you open an inductive circuit, again, since an inductor resists a change in current, the…

### Is there any electrical current storage device?

Yes, once current starts going through an inductor, it tends to continue going through that inductor in the same direction -- even if that inductor is completely disconnected from everything else. Unfortunately, all available inductors ( even superconducting magnetic energy storage systems -- see link below ) store relatively little energy. You can, however, store the means to produce a current. A battery is such a storage device: when charged, it can produce a current…

### What happens to a light bulb when put in series with a inductor?

When you put a light bulb in series with a inductor, the inductive reactance of the inductor reduces the current available to the light bulb, making it less bright. For this effect to be noticed, however, you need a very large inductor. To cut the current in a 60W bulb at 120VAC/60Hz by one half, for instance, you need an inductor around 0.6 henrys.

### Objects can be charged by the transfer of electrons?

Yes. When an electron moves into or out of the electron cloud of an atom, the atom changes ionization level. That constitutes a change in charge. We consider the charge to be negative when electrons are added, and positive when electrons are removed. More often, when there is an electric current flowing, the electrons push each other around the circuit, so the net charge tends to remain the same, although that's the resistive case…

### Why doesnt a field coil in a DC shunt motor lead to short ciruit when it is a fact that an INDUCTOR is a short circuit to DC?

Yes, an inductor is a short circuit to dc...that's true....IF the inductor is an ideal one, that is, the inductor has no resistance but has inductance only. Anything in real world, as you know, is not ideal. An inductor is usually made of a copper wire. A copper wire has its own resistance. If an inductor coil is thin and long (i.e. many turns), it will provide an appreciable resistance to DC, and will no…