The magnetic effect of electric current is known as electromagnetic effect. It is observed that when a compass is brought near a current carrying conductor the needle of compass gets deflected because of flow of electricity. This shows that electric current produces a magnetic effect. . . .
An electromagnet is a magnet that runs on electricity. A magnet produced by passing an electric current through a coil (a length of wire wound closely together is called a coil) wound around a soft iron core is called an electromagnet. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric cu . . .
An electromagnet’s strength depends on the number of turns of wire and the amount of current passing through it. An electromagnet is not a permanent magnet. Its magnetism lasts only while a current passes through its coil. Once the current stops, the iron core loses its magnetism. . . .
Electromagnets have numerous uses some common ones are given below: Cranes with strong electromagnets are used to pick up iron objects. To put them down Electromagnets are also used for separating objects made of magnetic materials from others. A thin iron strip attracted by an electromagnet produces a sound as it strikes against the electroma . . .