In this chapter, students learn more in detail about Electric Current, Magnetic fields, magnetic fields lines, compass, electromagnetic induction, Effects of Electric Current and so on. Magnetic Effects of Electric Current is also known as the electromagnetic effect. It is the branch of physics which mainly deals with the study of the electromagnetic force, electrically charged particles, electric fields and magnetic fields. The magnetic effect of electric current is known as an electromagnetic effect. It is observed that when a compass is brought near a current-carrying conductor, the needle of compass gets deflected because of the flow of electricity. It shows that the electric current produces a magnetic effect. In this topic, students can learn more interesting topics related to the Magnetic fields and the Electric Current, along with a few exciting experiments. Oersted law and his Experiment is the most important.