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Vishera
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I understand that an inductor acts as a closed circuit to DC because it's just a coiled wire but why doesn't it act the same way for AC? What does it act as in AC?
NateTG said:You can think of the inductor as working a bit like inertia in stream of fluid: when the rate of flow changes, it 'resists' the change. It creates a voltage difference proportional to the rate of change in current - so when the current is constant then there is no voltage.
jim hardy said:The impedance of a[STRIKE] capacitor[/STRIKE] inductor is JWL
i do that all the time too.
An inductor is a passive electronic component that stores energy in the form of a magnetic field. It is typically made of a coil of wire and is commonly used in electronic circuits to control the flow of electricity.
An inductor does not act as a closed circuit to AC because of its inherent property of inductance. When an alternating current passes through an inductor, it creates a changing magnetic field around the coil. This changing magnetic field induces a voltage in the inductor, which opposes the current flow. As a result, the inductor impedes the flow of alternating current, preventing it from acting as a closed circuit.
In a DC circuit, an inductor behaves like a short circuit. This is because in a DC circuit, the current is constant and does not change direction. As a result, there is no changing magnetic field created in the inductor, and hence there is no induced voltage to oppose the current flow. Therefore, the inductor behaves like a wire with very low resistance.
The primary role of inductors in AC circuits is to control the flow of current and voltage. They are commonly used in filters, oscillators, and transformers. They can also be used to store energy and create a phase shift in AC circuits.
An inductor is represented in a circuit diagram with the symbol of a coil. The coil has two parallel lines and a curved line connecting them, representing the winding of wire. The direction of the curved line indicates the direction of the current flow in the inductor. The value of the inductance is also specified next to the symbol, usually in units of Henry (H).