COMPUTER HARDWARE SERVICING NC II BASIC ELECTRONICS: FAMILIARIZING THE RESISTANCE

Resistance

            Resistance is the measure of how difficult it is for current to flow through something.  And being familiar with resistance, it can help you better understand electronic circuitry. Resistance deals also with current that involves in voltage and with the conductors and insulators. Insulators are those do not easily carry a current  like glass, ceramics, woods,  and plastics. For best result in resistance study, Good Conductors is the one to deal with. Metal is the good conductor that I am talking about. Current can easily flows trhough metals that’s why plastics is used as cover for metal wires to be its insulator. Now how about the Silicon and Germanium? They are called “the semi-conductors”  which fall between conductor and insulator.

Computer Hardwrae Servicing NC II Basic Electronics: Familiarizing the Voltage

Voltage

             To understand what electronics is, you need to know first, what is voltage. All we know that if there is no Voltage, electronics is non sense.  Yet, we know all about this, if not , this article can help you.

Let us say I have a battery in my hand. Does the battery have voltage? Yes, it has. The batteries have voltage between its terminals. This voltage helps the Current to flow through any electrical circuit placed across it. If there is a current flow into the circuit, you will see some happenings like a bulb produce light, you can create heat, sound, movement, magnetism, sparks and etc.