# What is the formula of resistance?

2
by shayena

2014-07-30T23:14:00+05:30

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Resitance of an object is the ratio of the potential difference across a conductor to the current flowing in a conductor.
R = V / I

Resistance of a conductor R = p L / A
p = resistivity of the conductor material = constant for that material
L = length of the conductor  used in the circuit
A area of cross section of the conductor  - used in the circuit

2014-07-31T09:30:23+05:30

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Resistance is the physical quantity that opposes the flow of current in a conductor.
R  = Potential Difference/Current flowing = V/I