In real this is how a resistor looks like
The circuit symbol of a resistor is
Function of a Resistor
Resistors restrict the flow of electric current in a circuit.
How it is measured..??
The resistance is measured by "Ohms" and its symbol is
The value of resistance depends on what..??
Resistance is Determined partially by Composition,
and is inversely proportional to Cross Sectional Area
How resistance is represented in a resistor
They are represented by color codes and there are 4 band, 5 band, 6 band color codes but the most widely used one is 4 band, the color code is given by
Resistors in Series
In series the value of resistors just add up, i.e a single equivalent resistance of the series resistors will be the sum of all the series resistors
so, R equivalent = R1 + R2 + R3 + . . .
Resistance in Parallel
In parallel the resistors behave in a different way
R equivalent = 1 ÷ (1/R1 + 1/R2 + 1/R3 . . .)
Resistors restrict the flow of electric current in a circuit.
How it is measured..??
The resistance is measured by "Ohms" and its symbol is
The value of resistance depends on what..??
and is inversely proportional to Cross Sectional Area
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They are represented by color codes and there are 4 band, 5 band, 6 band color codes but the most widely used one is 4 band, the color code is given by
Resistors in Series
In series the value of resistors just add up, i.e a single equivalent resistance of the series resistors will be the sum of all the series resistors
so, R equivalent = R1 + R2 + R3 + . . .
Resistance in Parallel
In parallel the resistors behave in a different way
R equivalent = 1 ÷ (1/R1 + 1/R2 + 1/R3 . . .)
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