Electronic Circuit

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Electronic Circuit
1. Tittle :
Ohm’s Law Circuit
2. Background :
When voltage is applied to an electrical circuit, and passed through a resistor
components, current flows in the circuit. Or can be explained that Ohm's Law is the
mathematical relationship among electric current, resistance, and voltage. The principle
is named after the German scientist George Simon Ohm. Mathematically, Ohm's Law for
DC circuits can be stated as :
V=I.R
V = Voltage applied to the circuit, in volts ( V ),
I = Current flowing in the circuit, in amperes ( A ),
R = Resistance in the circuit, in ohms ( Ω ).
I write this article, because in electronics, Ohm’s Law is very important to analyzing
electronic circuit. Mostly, electronic circuits using Ohm’s Law in analyzing voltage
( V ), current ( I ) and resistance ( Ω ) values.
3. Electronic Circuit :
3.1 Image of Circuit

3.2

Device of Circuit
3.2.1 Voltage ( V )
The definition of voltage is
the electromotive force or
the electrical potential difference between two points in a circuit expressed in
volts. Voltage is symbolized by an uppercase italic letter V or E. The standard
unit is the volt, symbolized by a non-italic uppercase letter V. The function is
voltage causes the electrons flow from low potential (negative) to high
potential (positive) or can be explained that voltage causes electric current ( I
3.2.2

).
Resistor / Resistance ( R )
Resistor is an electrical component that limits or regulates the flow of
electrical current in an electronic circuit. The resistor's ability to reduce the

3.2.3

current is called resistance and is measured in units of ohms (symbol : Ω).
Electric Current ( I )

Electrical current is a measure of the amount of electrical charge transferred
per unit time. The SI unit of electrical current is the ampere, defined as 1
coulomb/second.
3.3 Principle Work
When electric current ( I ) is flowing or passinf through a resistor ( R ), so at both
ends of resistor will appear voltage ( V ) or mathematically can be written :
V=I.R
3.4 Function of Electronic Circuit : Ohm’s Law
The main function of Ohm's law is used to determine the relationship of voltage and
current strength and can be used to determine resistor value without use an
ohmmeter.
4. Conclusion
Ohm’s Law is use to analyze electronic circuit that have electric current ( I ), voltage
( V ), and resistance ( R ) value.
5. Suggestion
Using Ohm’s Law need to be considered value of resistance, so teh result of calculation
have an ideal value.

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