is the measure of opposition offered by any body to the flow of electric current. A resistor is an electronic component used in the circuit in order to offer that particular amount of resistance.
The resistance across any object is calculated using the formula
v = Voltage applied across its ends
I = Current flowing through it.
If resistance are connected in series the series resistance is given by
If resistance are connected in parallel the parallel resistance is given by
Where, R1, R2, R3 ...... Rn are the given resistors. The resistance is measure in ohms ($\Omega$).
Resistance Formula is used to calculate the resistance across any given number of resistors in the circuit. It is also used to calculate the resistance in any given body.