Resistor

Resistor Basic (Link)

Hear we discuss about the basic electronics components like resistors capacitors inductors as on.

our motive is to just clear the basic concept of electronics components what they actually works and we will discuss in detail in our further videos

But in this video we discuss about the Resistors

1st

What is Resistor?

In short we can say that

A resistor is a passive component and the basic work of a resistor is to oppose the flow of current.

because the resistance is inversely proportional to the current

R=1 / i

that means when the resistance value is low than the current will be higher

and when the resistance will be higher than the current will be lower

according to above definition we have to understand two words which comes in above definition

1st is Passive component and 2nd Current

passive components are those components which consumes power

and we know that power is equals to voltage multiplied by ampear

P = V x A

ampear is the unit of current

and resistor opposes the flow of current which effects the resultant power

Symbols of Resistor

according to symbol it is clear that resistors have no polarity

polarity means it has no positive or negative poles

so it does not matters from which side component will connect in the circuit

There are basically two types of resistor

1st is fixed type

and

2nd is variable type

fixed type resistors are those type of resistors whose value is fixed it can't be changed by us

like carbon film metal film etc are fixed type resistors

and

variable type resistors are those resistors whose value may be changed by ourselves

like potentiometer

potentiometer also called pot resistor or presets as in our general language

the pot resistors are mostly used for controlling the volume of a device , brightness or contrast  of display etc that means where we have to control the gain for desirable output

for obtaining the value of resistor in any given electronics circuit  we have to understand ohm's law

and

we will discuss ohm's Law in our next video

Thank you