RESISTOR
Resistor mainly causes resistance
Resistance
The property of the conductor to oppose flow of the electrons(electricity) is called resistance.
Ohms law
V=I/R
where
V stands for voltage
I stands for current
R stands resistor
SI unit of resistor is ohms
Arrangement of resistors
Series combination
A combination where resistors are arranged in end to end
combination and where current across each resistor is same .
Such type of combination is called series combination
uses
mainly used to increase equivalent resistance and decrease voltage
Formula
RS=R1+R2+Rn
Where
RS stands for total equivalent resistance
R1 to Rn stands for resistanes of respective resistors
Parallel combination
The combinations where resistors are arranged across to terminal
or have to common points if contact and where voltage across each resistance
is same such type of combination is called parallel combination
uses
mainly used to increase current and resistance of each resistor is less than
total resistance
Formula
1/Rp=1/R1+1/R2+1/Rn
Where
Rp stands for equivalent resistance
R1 to Rn stands for resistor resistance for respective values
Types of Resistors
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