Physics and Our Universe: How It All Works Season 1 Episode 37 Applications of Electromagnetic Induction

In season 1 episode 37 of Physics and Our Universe: How It All Works, viewers are introduced to the concept of electromagnetic induction and its various applications. Electromagnetic induction is the process of generating an electric current by changing the magnetic field around a conductor. This phenomenon was discovered by Michael Faraday in the early 19th century and has since become an essential part of many electrical devices.

The episode begins by explaining the basic principles of electromagnetic induction, including the concept of magnetic flux and the role of conductors and magnetic fields. Viewers are also introduced to Faraday's Law, which states that the magnitude of the induced EMF is proportional to the rate of change of magnetic flux.

The episode then goes on to explore some of the most common applications of electromagnetic induction. One of the most important applications of this phenomenon is in the generation of electrical power. Electrical generators work by rotating a coil of wire in a magnetic field, which induces an electric current in the wire. This electric current can then be used to power electrical devices.

The episode also covers the use of electromagnetic induction in motors. Electric motors work by the opposite principle of generators - a magnetic field is used to produce motion in a wire instead of vice versa. The workings of an electric motor are explained in detail, including the role of brushes, commutators, and coils.

The episode then moves on to explain the use of electromagnetic induction in transformers. A transformer is a device that is used to change the voltage of an alternating current (AC) electrical supply. Transformers work by passing the AC current through coils of wire wrapped around a magnetic core. These coils induce a current in the second coil, which has a different number of turns and therefore a different voltage. The workings of transformers are explained in detail, along with their many practical applications.

Other applications of electromagnetic induction covered in the episode include the use of induction heaters, which use the principle of electromagnetic induction to heat metallic objects, and the use of metal detectors, which use induced current to detect the presence of metal.

Overall, season 1 episode 37 of Physics and Our Universe: How It All Works provides a thorough exploration of the concept of electromagnetic induction and its many practical applications. The episode is full of detailed explanations and visual aids to help viewers understand the complex science behind this phenomenon. Whether you are a physics student or simply interested in learning more about how electricity works, this episode is sure to be both informative and engaging.