Ohm’s Law

Companions today in artikelku kodong will discuss ohm's law , the law is implemented in everyday life , the following explanation

In 1826, a German scientist named Georg Simon Ohm (1789-1854) made an experiment that showed the relationship between electric current, electric potential difference, and resistance. Based on the experiment, Georg Simon Ohm state that:

“Electric current that flows in a conductor wire is directly proportional to the potential difference between the ends of the conductor wire,”

The statement is known as Ohm’s law. Mathematically, the relationship between electric current, electric potential difference, and resistance is formulated as follows:

V= I R

In which:

I = Electric current (ampere or/ A)

V=Electric potential difference/ electric voltage (volt or V)

R= Resistance (ohm)

Example

In an electric circuit, the electric current flows through a conductor wire of 2 amperes. If potential difference in the ends of conductor wire is 39 volts, what is the resistance in the conductor wire?

Solution

Given that:    I = 2 A

                    V = 30 V

Asked:

       R     = (30 v)/(2 A)

              = 15 Ω 

So, the resistance in the conductor wire of the circuit is 15 ohms.

Reference:
Irawan, Etsa Indra dan Sunardi. 2008. Pelajaran IPA-Fisika Bilingual untuk SMP/Mts.Kelas IX. Bandung: CV.Yrama Widya.