Electricity and Magnetism

Static Electricity

1) Electric Field and Electric Field Lines http://evantoh23.wordpress.com/2013/02/26/electric-field-and-field-lines/

2) Static Electricity – charging and object, and charged body near a body


Current Electricity

1) Concepts of Short Circuit http://evantoh23.wordpress.com/2014/02/11/short-circuit/

2) Basics terms in an electric circuit http://evantoh23.wordpress.com/2014/02/11/basic-terms-in-an-electric-circuit/

3) Electromotive force (emf) vs potential difference (p.d) http://evantoh23.wordpress.com/2013/04/07/175937913/

4) Factors that affect resistance of a conductor http://evantoh23.wordpress.com/2013/03/24/factors-physical-quantities-which-affect-resistance-r/

5) Common Electrical Symbols



DC Circuit

1) Rules of Series and Parallel Circuits - Using River System Analogy

2) Potential Divider Summary

3) V-I graphs of various components


Practical Electricity

1) Errors in connection of the 3-pin plug http://evantoh23.wordpress.com/2014/03/06/errors-in-connection-of-3-pin-plug/

2) What is the functions of fuse and earth wire, and how they work


3) Why fuse and switch must be on Live wire? http://evantoh23.wordpress.com/2014/03/05/how-the-wiring-works-and-the-purpose-of-fuse-and-earth-wire/

4) What do you mean by a kettle is 2000 W? http://evantoh23.wordpress.com/2014/02/27/what-do-you-mean-by-a-kettle-is-2000w/

5) How is the cost of electrical consumption calculated? http://evantoh23.wordpress.com/2014/02/18/cost-of-electrical-energy-consumption/

6) 3-pin plug and what are the wires? http://evantoh23.wordpress.com/2013/05/14/the-3-pin-plug/

7) What does power rating 240 V and 60 W of a bulb mean? http://evantoh23.wordpress.com/2012/10/29/what-do-you-mean-by-bulb-rating-of-240-v-60-w/

8) Why thick wires for high power electrical appliances? http://evantoh23.wordpress.com/2012/10/24/thick-cables-for-high-power-electrical-applia/

9) Double Insulation http://evantoh23.wordpress.com/2012/10/18/double-insulation/

10) Why lighting circuit should be connected in parallel?

11) 3 pin plug

12) Function of Fuse

13) What will cause the fuse to melt?

14) Function of Earth Wire

15) Why Fuse and Switch be on the Live wire?


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



1) Precious Right Hand Grip Hand (RHGR): http://evantoh23.wordpress.com/2014/08/21/my-love-for-right-hand-grip-rule-rhgr/

2) Dots and Crosses: What do they mean? http://evantoh23.wordpress.com/2014/08/04/current-into-or-out-of-the-plane-of-the-paper-crosses-or-dots/

3) How to use Fleming's Left Hand Rule (FLHR) http://evantoh23.wordpress.com/2014/05/16/how-to-use-flemings-left-hand-rule-flhr/

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

5) DC Motor Summary

6) Electromagnetism - reading on balance with a magnet and current-carrying wire


Electromagnetic Induction

1) DC motor vs AC generator

2) AC generator summary

3) Transformer summary

4) Understanding CRO



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