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Saturday 29 December 2018

Ohm's Law

Ohms law states that the current flowing through a conductor is directly proportional to its potential difference provided that physical conditions (temperature) remains constant.

Mathematically,

I α V

V = IR

Where,

V = potential difference measured in volt
I = current measured in ampere
R = constant (resistance) measured in ohm

This law established the relationship between voltage, current and resistance.

When the voltage is kept constant, the current flowing in a circuit will increase with decrease in resistance and the current will decrease with an increase in resistance.
Also, when the resistance is kept constant, the current will increase with an increase in voltage and will decrease with a reduction in voltage.