Fundamentals of Electric Circuits1: Week One: "My First Electrical Adventure"

"CHAPTER 1" - Basic Concepts

This is my first electrical subject for my Electronics Engineering course. It is so exciting and challenging. I really need not to forget my past subjects especially the Mathematics & Science subjects because I am going to apply all my knowledge for my solutions to the exercises/problems.

Our first topic was about the Basic Concepts. So obviously we discussed of “What is Electric Circuit?" and the definitions of some basic concepts. Some of the basic concepts are charge q(t), current i(t), voltage v(t), power p(t), energy w(t), & circuit elements.

Definitions:

Electric Circuits - An electric circuit is a path in which electrons from a voltage or current source flow. Electric current flows in a closed path called an electric circuit. Electrical elements that are connected together.

Charge q(t) - There are two types of electric charges, positive and negative. Positively charged substances are repelled from other positively charged substances, but attracted to negatively charged substances; negatively charged substances are repelled from negative and attracted to positive. - Measured in
coulombs (C).

Current i(t) - An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. - Measured in amperes (A).

Voltage v(t) - Is the electric potential difference between two points, or the difference in electric potential energy of a unit charge transported between two points. - Measured in volts (V).

Power p(t) - Electric power is the rate at which electric energy is transferred by an electric circuit. Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries. - Measured in watts (W).

Energy w(t) - Is energy newly derived from electrical potential energy. When loosely used to describe energy absorbed or delivered by an electrical circuits "electrical energy" refers to energy which has been converted from electrical potential energy. - Measured in joules (J).

Formulas: (Technique - Ohms Law Formula Wheel)

Some Learnings:

I also learned that we have to wear slippers always at home to prevent electrical shock / to prevent us from being electrocuted.
Clean sockets to avoid some accidents like electrocution.