Magnetic Force on a Current-Carrying Conductor

Using a neodymium magnet, some paper clips and a battery, you can demonstrate the magnetic force acting on a current-carrying wire while recalling Fleming's left-hand rule. Using the same frame constructed in the previous video, you just need to add a wire with a few bends in between to create a U-shape in the middle

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Building a Simple DC Motor

Using material that is easily available, you canĀ build a simple homopolar D.C. motor (one that uses a single magnetic pole. I made the video above to help you do so. The material used are as follows: insulated copper wire paper clips neodymium magnet 1.5V AA battery plastic or wooden block (I used a 4x2 Lego

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Magnetic Shielding

I made this rather simple video this morning showing a physics demonstration on the effect of magnetic shielding. A paper clip is shown to be attracted to a magnet. A series of objects are placed in between, such as a plastic ruler, a steel ruler, a steel bookend, and some coins of different alloys. It

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Simulation: Faraday's Law of Induction

This simulation traces the flux linkage and corresponding emf generated by a rectangular coil rotating along an axis perpendicular to a uniform magnetic field. One is able to modify the angular frequency to see the effect on the frequency and peak emf generated. https://physicslens.com/simulation-faradays-law-of-induction/Follow

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Simulation: How emf is generated

This simulation is really more of an animation that allows students to apply Fleming's left hand rule on a line of electrons along a conductor cutting a magnetic field in order to appreciate how emf is generated. https://physicslens.com/simulation-on-emf-generation/Follow

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DeLight Version 2

I modified "DeLight", the board game that I designed a few years back into a worksheet version (for small groups) as well as a powerpoint version (that teacher can facilitate as a class activity, pitting half the class against another). Worksheet: DOWNLOAD Slides: DOWNLOAD The objectives of the game is to reinforce concepts related to

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Concrete to Abstract

As I was teaching the use of the potential divider equation to my IP4 (Grade 10) students last week, I approached it by teaching the rules first before showing worked examples. Thereafter, as some students remained confused, I merely reverted to explaining the rules. Eventually, I resorted to simplifying the equation by substituting simple numerical

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Phase Difference Simulation

I created this simulation for use later this semester with my IP4 classes, to illustrate the concept of phase difference between two oscillating particles. https://physicslens.com/phase-difference-simulation/Follow

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Using a mobile phone in a petrol station.

So it's safe to use a mobile phone in a petrol station. But not wearing nylon. For more on this, read the Straits Times article : http://www.straitstimes.com/asia/se-asia/use-of-mobile-phones-at-petrol-stations-do-not-cause-fires-experts https://physicslens.com/using-a-mobile-phone-in-a-petrol-station/Follow

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Explanation for Water Bending with Static Electricity

It's interesting to note the differing views regarding the explanation for how a thin stream of water can get bent when a charged object is placed near it. It started with these two videos from Veritasium: This video then sets out to disprove Veritasium's model of ions being removed from the water stream. https://physicslens.com/explanation-for-water-bending-with-static-electricity/Follow

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