Intorduction

Electricity is one source of energy that exist essentially as a process whereby energy can not be removed or destroyed, but can be used and converted into other forms.

Electricity is a form of energy that can be converted into other forms of energy for example, turn it into light energy.

In the absence of a known electrical components, which include a strong electric current, voltage and resistance which these components are in harmony in a propagation medium called resistors.

In every relationship between these components has specific characteristics that have been put forward by a German physicist nationality in a kongsep basic theory of electricity which is then developed into a law called the law suit kirhchoff originators name Robrt Gustav Kirchhoff.

In Kirchhoff's Law implied that there are certain traits that mepengaruhi hamabatan three components of a strong electric current flow, voltage and resistor that one of them is a series or constraints.

Barriers specific characteristics influence the electrical current in the electrical current flowing in it, which as we all know there are two types of circuits which is based on the preparation of the series resistor is hambatanya arranged parallel or series circuit without branches and the hamatanya arranged in branching, better known as a parallel circuit.

Rangkaia series or parallel.

This distinction is based not only on the composition resitornya but also other differences in terms of characteristics that baii mauun in terms of its function.

To know about it dilakukanlah a physics experiment called series and parallel circuits.

Theory

The results of measurements of the potential difference across the resistors R1 and R2 (different values) are arranged in series showed different results, but if the measured current through the second resistor is then obtained by the same measurement.

By contrast, if the resistors are arranged in parallel, the results obtained by different measurements.

The current through each resistor is different, but the voltage across each resistor measurement sama.kenapa so?

That is because the potential difference of each series of a series of things that different obstacles but menagalir strong currents at every point in a series circuit is the same.

This berkebalikn parallel with a series of things, dirankaian same parallel is the potential difference in each resistor, and the different electrical currents flowing in the circuit.

This fact also shows that this type of arrangement of resistors also determine the value of a variable voltage and a strong electric current in the circuit.

In the series arrangement, serves as a resistor voltage divider, which means if the voltage across each resistor is added together then the amount is equal to the magnitude of the voltage source, in other words if the electricity flow is I and there are three current or resitor divider in it so big I large sum equal to the electric current

flowing in each resitor.

Meanwhile, if the resistors are arranged in parallel, the resistor serves as a flow divider, which means that if a strong electric current passing through each resistor is measured, it will have a value equal to the total current before branching points.

Gustav Kirchhoff Robrt kelistritan describes the obstacles raised in kirchhoffnya law is divided into two parts, namely the first and second Kirchhoff's laws.

Kirchhoff's first law, explains that the circuit bercbang amount of current that enters the branching point is equal to the exit of the final branching in other words I entered the same as I came out.

The second law states that the number of closed circuit emf is the sum of the amount of energy in the pressure drop is equal to zero.

Metode

In this experiment we need a number of tools that include 0-12 V power supply as the power source, two resistors, basicmeter for measuring strong currents and voltages, and cable as a liaison.

The purpose of this experiment is done first so that the learners are able to skillfully prepare and parale series circuit, can recommend using basicmeter and also to be able differentiates the series circuit in terms of the characteristics and functions.

In keeping with that objective experiment was divided into two activities.

The first activity soon is focused on a series circuit, the first step is to assemble a string of series with all the components to join the new way of power supply cables in series or parallel, or in other words without branching.

After the first sub-activity is to conduct robust measurement of electric current at the point of the circuit before the first resistor (R1), among a reistor, and after (R2), by putting the appropriate position that the basic meters if a strong electric current is measured before R1 then basicmeter laid before

R1 and similarly in between the resistor and the R2 and also by using a source voltage of 3V, 6V, 9 V and 12 V sub-activity is to calculate both of the voltage on R1 and R2 are performed by placing basicmeter in a position to calculate the voltage and put them into place on each resistor

alternately by connecting basicmeter with resistor wired in parallel to the observed tion will remain with the initial voltage is 3V, 6V, 9 V and 12 V.

The second activity is to use a parallel circuit, in accordance with less first thing that we do is a parallel arrangement in advance.

After that, the same as the first activity using a series circuit that measures the electrical current strength at the position before the first resistor (R1), among a reistor, and after (R2) and also the voltage at R1dan R2.

Disccusion

of data and analysis on a number of explanations related to series and parallel circuits.

In accordance with the data obtained from this experiment can be seen clearly that the strong electric current series circuit based on measurements obtained using either basicmeter at the point before the series between R1 and R2 R1's value at 0.014 V, 0.028 V, 0.042 V and 0.054

V for each source voltage of 3V, 6V, 9V, and 12 V. it was consistent with the theory that a series circuit digunakann strong electric current that flows at every point on the circuit at large.

In addition to the first activity was also obtained from the data in the form of voltage or potential difference on any obstacle that can be seen in the table the first activity, this series dirangkaian obtained different results on every obstacle that is used on the source voltage is 3 V the voltage on the barrier R1 dieperoleh

0.8 V and the R2 obtained hamabat large voltage 2.0 V where the total voltage of 3.0 V is obtained, then the source voltage is 6 V R1 dieperoleh barrier voltage of 1.6 V and the R2 obtained hamabat large voltage 4.2 V where the total voltage obtained is 6.0

V, as well as the data obtained for the voltage source voltage 9 V and 12 V remains the second data acquired approximately 0.2 penjumlahanya results with a total voltage of the data obtained.

It is described on the theory that the series resistor in the circuit that functions as a voltage divider in the sense that the number of voltage on each resistor that is equal to the total of the voltage.

Here the lack of resemblance with the existing theory due to external factors adanay that there is in terms of equipment.

In the second activity is obtained by using a series of parallel data where the data obtained in contrast with the data in a series circuit.

Dirangkaia series described above on the same paregraf of the data is aruslistriknya sedagan with less data using the same parallel circuit is the voltage.

And the electric current flowing in a parallel circuit is different at every point on the circuit.

It is proved that the parallel circuit potential difference equal to each resistor and voltage source equal to the amount used.