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 use lemons and strips of zinc and copper to make a battery. First, strips of copper and zinc are added to one lemon and they are connected across a voltmeter. This is repeated, this time with more lemons and metal plates, until a...

We look at how an incandescent light bulb can be made. First we attach a tungsten wire to electrodes in a flask of air and pass a current through the wire. The wire glows briefly before burning and breaking. Next we fill the flask with...

We create an underwater volcano by placing a conical flask of hot coloured water in a tank of cold water. The hot coloured water rises through the cold, demonstrating convection. Physics - Energy And Radioactivity - Learning Points....

Explore the difficulties of extracting aluminium from its ore, and how the vast quantities of heat and electricity generated by electrolysis allow this to happen. Chemistry - ReactionsLearning Points. Aluminium is difficult to extract...

How these simple semiconductor devices allow us to control the strength and flow of electrical current in a circuit, and are integral components in modern electrical equipment. Physics - Electricity And Circuits - Learning Points....

Electric eels can generate amazing amounts of electricity inside their body. Discover how they use this for defence and to stun potential prey. Physics - Electricity And Circuits - Learning Points. Electric eels create electricity to...

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...

A high-current electrical discharge in the atmosphere that may occur during thunderstorms, or sometimes dust storms or volcanic eruptions. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...

An anode is the terminal from which electrons leave a system. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...

Opposition to the flow of a current within a circuit, measured in ohms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...

Did you know that the force or push of an electric current is measured in volts?
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Investigate why robots need parallel circuits to work properly.
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Parallel circuits have...

Discover that the lights of the Eiffel Tower form part of an electrical circuit.
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Circuits usually...

Explore in simple terms what electricity is, how it is created and how it travels to our homes.
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Find out how to construct a series circuit.
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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...

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,...

Join us as we delve into the intricacies of resistance, resistors, resistivity, inductance, self-inductance, and inductors. Billy kicks things off by clarifying the differences between resistance, a concept; resistors, physical elements;...

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...

By the end of this learning object, the student will be able to: Recognize the symbols associated with each element of an electric circuit. Know the difference between connection in series and connection in parallel.13762

By the end of this learning object, the student will be able to: Explore how to measure the electromotive force of cells connected in series.

By the end of this learning object, the student will be able to: Explain the electric resistance rule.