We create a simple electromagnet by coiling wire around a nail and passing current through it. The magnetic field around the electromagnet creates similar patterns in iron fillings to a permanent magnet. Physics - Electricity And...

We compare the properties of three iron mixtures: iron and water, iron and oil and a ferrofluid - a mixture of compounds containing iron and oil. First, we look at how iron filings behave when mixed with water and then oil. We then hold...

We use two magnets and a set of scales to examine magnetic field and strength. One magnet is attached to the scales and a second is lowered towards it. When opposite poles are facing each other, the weight on the scales decreases as the...

Discover how the chemical reactions which produce the extraordinary colours of the Northern Lights have their origins in outer space. Chemistry - Atoms And Bonding - Learning Points. Aurora Borealis, or Northern Lights, is a natural...

What are the properties of magnets, and why are they useful to us? Physics - Electricity And Circuits - Learning Points. A permanent magnet is a piece of metal that possesses a magnetic field. The magnetic field is strongest at the...

Discover how simple magnets and wires can be used to create electricity - and how this principle is now used in national power supplies. Physics - Electricity And Circuits - Learning Points. In 1835 the scientist Michael Faraday made an...

Electrical polarity is the arrangement of positive and negative charge in an electrical circuit, or distribution of positive and negative charge in, for example, a chemical bond. A Twig Science Glossary Film. Key scientific terms defined...

Did you know that when a coil of metal moves within a magnetic field it produces electricity?
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Find out how electromagnets power the world's fastest train.
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Find out how magnetic and non-magnetic materials are separated at a junkyard using a giant magnet.
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Discover how a compass works and why the needle always points north.
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Earth has its own magnetic...

Find out how birds can use the Earth's magnetic field to help them migrate.
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In this episode, we focus on the change in magnetic flux and the emergence of back electromotive force (emf). Follow along as we dissect the side view of a current-carrying wire loop rotating in a magnetic field. Unravel the concept of...

In today's lesson, we delve into the fascinating world of electric motors. Visualize a rectangular conducting loop in a uniform magnetic field – the key to motor magic. As we explore the loop's rotation, we decipher induced magnetic...

This Flipping Physics episode unravels the intricate dance between magnetic fields and induced currents in a loop. Learn the principles governing induced magnetic forces, using a practical example with a rectangular conducting loop....

Ever wondered how the motion of a conductor in a magnetic field generates voltage? We break it down with a real-world example of an airplane wing cruising through Earth's magnetic field. Don't worry; we keep it light and fun! Learn about...

In this episode, Mr. P takes us deeper into Faraday's law, exploring the crucial element of direction by introducing Lenz's law. Lenz's law states that the induced current in a circuit, due to a change in magnetic flux, is directed to...

In this episode, the team explores the fascinating interplay between moving electric charges and magnetic fields, unveiling the reciprocal relationship where moving magnetic poles generate electric fields. Delving into electromagnetic...

We delve into the derivation of the equation for energy stored in the magnetic field generated within an inductor as charges move through it. Explore the basics of LR circuits, where we analyze a circuit comprising an inductor,...

Unravel the intricacies of ideal solenoids with us! We break down the equations for induced emf, exploring Faraday's Law and the inductor formula. Dive deep into integrals, variables, and solenoid length, demystifying the math behind...

Ever wondered why current in a circuit doesn't change instantly? Join us as we explore the fascinating world of inductance using a basic circuit with a battery, a resistor, and a switch! 🤓🔧 In this engaging video, we break down the...

In today's episode, we explore an alternative derivation of the motional emf equation, revealing a fascinating perspective. Picture a conductor moving right on parallel metal rails connected by a wire in a uniform magnetic field. A force...

In this next episode, Mr. P guides us through the culmination of electromagnetic knowledge – Maxwell's equations. After a quick recap of Gauss's law and its magnetic counterpart, the class dives into Faraday's law of induction, unveiling...

In this episode, Mr. P delves into Gauss's law for magnetism, unraveling the mysteries of magnetic flux through closed surfaces. Exploring the hypothetical existence of magnetic monopoles, the class speculates on the implications of...