Basic Electronics 

What is voltage and current?

Voltage, current, and resistance are the most common terms we hear in physics.

Voltage is defined in different ways.

1) Voltage is the potential difference between two points in an electric field that charges electrons.

2) Voltage is a type of pressure that is built into the alternator. or
We refer to the electromagnetic potential difference between two poles as voltage. An alternator is a device that converts mechanical energy into electrical energy.

There are two types of voltage 

1)Alternating current 

2) direct current

We call alternating current AC Voltage and direct current is called DC Voltage.

The standard SI unit of voltage is volt, which is denoted by V.

V is the voltage in volts

We use AC voltage in the house, but to make the electronics circuit work, we need DC voltage, we can easily convert AC voltage into DC voltage with the help of diodes.

What is current?

Any conductor, there are free electrons inside it, voltage creates pressure on these electrons and due to pressure, electrons start flowing forward The flow of charged electrons is called current.

The standard SI unit of current is Ampere, which is denoted by I.

I is the current in amperes

What is Resistor?

The resistor is also called resistance by many people, but there is a difference between them, the resistor is a component and resistance is its property.

The resistor is an electronics component used in electronics circuits to control the flow of electrical current or opposes the flow of electrical current.

The resistor is an important component in electronics circuits, Resistors come in many types and sizes.

The SI unit of resistance is Ohm. It is represented by this Ω symbol.

Types of Resistor

1)Fixed Resistor 2)Variable Resistor 3)Thermistor 4)Varistor 5)Light Dependent Resistor 6)Magneto Resistor