Evan's Space

Static Electricity

- Static Electricity basic concepts summary

- Static Electricity - applications​

- Static Electricity – charging and object, and charged body near a body​

- Electric Field and Field Lines​

- Short circuit

​- Electrostatic application- BMW paint Spraying

 

Current Electricity

- Common Electrical Symbols

- Ohmic and Non-ohmic conductors

​- Electromotive force (e.m.f.) vs potential difference (p.d)

​- Factors (physical quantities) which affect Resistance R

​- Basic terms in an electric circuit

- Factors affecting resistance of conductor (thin and fat)

- Electromotive force (e.m.f.) vs potential difference (p.d.) new

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DC Circuit

- Basic Concepts on DC Circuit – River System

- Rules of Series and Parallel Circuits

​- Input Transducers - Light dependent resistor (LDR) and thermistor

- Potential Divider / Potentiometer

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Practical Electricity

- Thick Cables for High Power Electrical Appliances

- Does it cost much to charge our phone twice a day?

- What if wires in the 3-pin plug are swapped?

​- Why the fuse and switch must be on the live wire?

- Why do we need earth wire and fuse?

- What will cause the fuse to melt

​- The 3 pin plug

- Function of Fuse​

​- Thick Cables for High Power Electrical Appliances

- What do you mean by bulb rating of 240 V 60 W?​

​- What do you mean by a kettle is 2000W?

- Why lighting circuit should be connected in parallel?​

- Double Insulation

- Cost of Electrical Energy Consumption

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Magnetism

- Compass needle is a permanent magnet. It is made of steel!

 

Electromagnetism

- My Love for Right Hand Grip Rule (RHGR)

- How to use Fleming’s Left Hand Rule (FLHR)

- Current into or out of the plane of the paper (‘crosses’ or ‘dots’)

- Turning Effect of Current-carrying Coil in a Magnetic Field

- DC Motor Summary

- Electromagnetism basic

- Electromagnetism – Reading on Electronic Balance with Magnet and Current-carry wire

- Two parallel current-carrying wires - What is the forces acting on each wire?

- Charged particle moving in a magnetic field

- Test your FLHR

- Applying FLHR: different 2D views from a 3D diagrams

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Electromagnetic Induction

- DC motor and AC generator

- Understanding cathode-ray oscilloscope CRO

- Fleming's Left Hand and Right Hand Rule

- Transformer basic concepts

- AC Generator

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​Radioactivity

- Radioactivity Summary