Basic electricity:2.1 Ohm's Law

2.1 Ohm's Law

George Simon Ohm and Ohm's Law

The relationship between current, voltage and resistance was studied by the 19th-century German mathematician, George Simon Ohm. Ohm formulated a law that states that current varies directly with voltage and inversely with resistance. From this law the following formula is derived:

${current}={{voltage} \over {resistance}}$

or

$I={E \over R}$