Now, if we reverse the polarity of the battery, the direction of the current changes, consequently poles of the electromagnet are reversed, and the direction of magnetic lines of force also gets reversed. And magnetic lines flow from N to S pole. This electromagnet has its North Pole, N, and South Pole, S, like a conventional magnet. When the switch S is turned on, current starts flowing through the inductor, a magnetic field is produced and the inductor becomes an electromagnet.
Let us take a simple circuit as shown in Figure 2, where a battery is connected to an inductor L in parallel, and a switch S in series. It is denoted by the letter L and its SI unit is Henry, H.įigure 1 depicts the symbol of an inductor.įigure 1: Symbol of Inductor Working of Inductor It could be a tiny piece of straight copper wire or wire wound into rings called a coil.Īn inductor inherently opposes the change of current through it. What is an Inductor?Īn inductor is a two-pin passive component that stores energy in the form of a magnetic field when a current flows through it.
Let us take a deep dive into the world of inductors.
Inductors are vastly used from mobile, laptop chargers to high-end communication equipment like mobile base stations to the satellites orbiting the earth.
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