It is the most fundamental law used in circuit analysis. It provides a simple formula describing the voltage-current relationship in a conducting material.
Statement:
The voltage or potential difference across a conducting material is directly proportional
to the current flowing through the material.
V ∝ I
V = RI or I =V/R
or R =V/I
where the constant of proportionality R is called the resistance or electrical resistance, measured in ohms (Ω).
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