. State and explain

Ohm’s law

Best Answer

Ohm’s Law states that the current flowing through a conductor is directly proportionate to the potential contrast applied across its ends, supplied the temperature and different physical conditions remain unchanged.

Current is directly proportional to voltage difference through a resistor. That is, if the current doubles, also so does the voltage. To make a current flow through a resistance there must be a voltage across that resistance. Ohm's Law shows the relationship between the voltage (V), current (I) and resistance (R).

VαI or IαV


Where R is a constant and called resistance of the conductor.

v is potential difference

I is current

The S.I unit of resistance is ohm(Ω).

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