880 Words4 Pages

In this report I will show the background theory and explain the following concepts: voltage, current, resistance, Ohm’s law, serial and parallel connections. Methodology or the experimental part will explain and study the Ohm’s law discussing the point that voltage is proportional to the current and resistance is the constant of proportionality. The results of this experiment will then be expressed in a table and a graph.

Voltage (V)

Voltage is measured by a voltmeter in parallel its symbol is U. It is provided by cells which travel through the wire. When cells are in series they produce a higher voltage, as they act only as a one circuit compared to when in a parallel circuit every cell forms its own circuit. If the current I and the*…show more content…*

Its International System of Units is Ampere (A) and it is measured by using an ammeter in series. Adding more cells to a series increases the current. The current will stay the same in a circuit and it is not dependant on where the ammeter is placed. Also it is not used up by the circuit so it will not decrease, as it goes through the circuit. The higher the voltage the higher the current.

Resistance (Ω)

Resistance’s symbol is R and its IS of unit is Ω (ohm). The resistance is higher when components are in series that if they would be in parallel. Electrical resistance explains the relation between voltage and current. When there is a thick wire more electrons are able to move, but when there is a wire which is thinner less electrons are able to move this is called resistance, as the. It is a force which slows down objects, like the electrons. This is why we cannot fit many electrons through a narrow wire and a wider wire by the same pressure.

Ohm’s law

Ohm’s law is meant to show the relationship between voltage, current and voltage. It is a law which states that the current in an electric circuit is equal to the voltage divided by the resistance. The whole meaning of the law is that when current is increased the voltage will also increase, but decreases when the resistance increases, yet still having the same*…show more content…*

The equipment amount was limited and we got to use only one resistor, adjustable power source, voltmeter, ammeter and the necessary amount of wires. From these supplies we were able to plan and execute the circuit on the left.

In the circuit on the left the resistance stayed always 1,3 - 0,5 to the starting digit (35 Ω) with two exceptions where the resistance was 3,7 Ω and 2,4 Ω off the original measurement.

I have used my voltage and current readings to calculate the resistance and study the Ohm’s law and whether it worked during this experiment: if voltage is increased, the current increases and, because resistance is the ratio of the two are meant to stay the same.

Length is the independent variable (the one which is changed through the experiment) so it goes along the bottom axis. Current goes up on the side.

Results and discussion

The points on my graph are a bit scattered, but they are much more in a staight line than I thought they would be in. Purpose of this experiment was to study Ohm’s law, so I decided that the line of best fit was necessary to be in a straight line through the

Voltage (V)

Voltage is measured by a voltmeter in parallel its symbol is U. It is provided by cells which travel through the wire. When cells are in series they produce a higher voltage, as they act only as a one circuit compared to when in a parallel circuit every cell forms its own circuit. If the current I and the

Its International System of Units is Ampere (A) and it is measured by using an ammeter in series. Adding more cells to a series increases the current. The current will stay the same in a circuit and it is not dependant on where the ammeter is placed. Also it is not used up by the circuit so it will not decrease, as it goes through the circuit. The higher the voltage the higher the current.

Resistance (Ω)

Resistance’s symbol is R and its IS of unit is Ω (ohm). The resistance is higher when components are in series that if they would be in parallel. Electrical resistance explains the relation between voltage and current. When there is a thick wire more electrons are able to move, but when there is a wire which is thinner less electrons are able to move this is called resistance, as the. It is a force which slows down objects, like the electrons. This is why we cannot fit many electrons through a narrow wire and a wider wire by the same pressure.

Ohm’s law

Ohm’s law is meant to show the relationship between voltage, current and voltage. It is a law which states that the current in an electric circuit is equal to the voltage divided by the resistance. The whole meaning of the law is that when current is increased the voltage will also increase, but decreases when the resistance increases, yet still having the same

The equipment amount was limited and we got to use only one resistor, adjustable power source, voltmeter, ammeter and the necessary amount of wires. From these supplies we were able to plan and execute the circuit on the left.

In the circuit on the left the resistance stayed always 1,3 - 0,5 to the starting digit (35 Ω) with two exceptions where the resistance was 3,7 Ω and 2,4 Ω off the original measurement.

I have used my voltage and current readings to calculate the resistance and study the Ohm’s law and whether it worked during this experiment: if voltage is increased, the current increases and, because resistance is the ratio of the two are meant to stay the same.

Length is the independent variable (the one which is changed through the experiment) so it goes along the bottom axis. Current goes up on the side.

Results and discussion

The points on my graph are a bit scattered, but they are much more in a staight line than I thought they would be in. Purpose of this experiment was to study Ohm’s law, so I decided that the line of best fit was necessary to be in a straight line through the

Related

## Light Bulbs Shining The Light Essay

665 Words | 3 PagesIs the voltage across each of the resistors different for every resistor? The voltage that runs through the resistors are the same when current flows through the resistors, it is different when the voltage drops. Q7. Assume that you have a 10-Ohm, a 20-Ohm, and a 30-Ohm resistor in series connected to a 6.0-Volt battery. What is the total resistance of this circuit?

## Cane Toad Research Paper

1468 Words | 6 PagesOhms are measured in Ω, or omega. Voltage is measured in volts, or v. Current is measured in amps, or I. Resistance is measured in ohms, or r. For pipes, voltage would be like the water pressure, current would be like the flow rate, and the resistance would be like the pipe size. The equation to measure voltage is V=IR.A variant of this, Ohm’s law, for measuring resistance, has this

## Fixed Resistors Research Paper

982 Words | 4 PagesFixed resistors are the most frequently used resistors in the electronic circuits. These resistors have the fixed resistance value. Hence, it is not possible to vary the resistance of the fixed resistor. Resistance definition The process of restricting the flow of electric current to certain level is called resistance. The device or component used to restrict the flow of electric current to certain level is called resistor.

## Resistive Power Circuit Seminar Report

780 Words | 4 PagesSinΦ. Reactive power, or VAr, is not by any stretch of the really power at all represents the product of volts and amperes that are out-of-phase with one another. The measure of reactive power present in an AC circuit will depend up on the phase shift or phase angle between the voltage and the current and simply like active power, reactive power is positive when it is "supplied" and negative when it is

## Electric Field Lines Lab Report

816 Words | 4 PagesThe experimental value yielded a result of y = -100x + 10 and the theoretical yielded a -100 V/m. The percent error between the two values was 0.00%. The experiment showed that the theory of the relationship between equipotential lines and electric field lines hold true. Introduction: The objective of this lab was to analyze the nature of electric fields formed by two dipoles and two parallel line conductors using a digital voltmeter. The purpose is to test the theory that states equipotential lines always run perpendicular to electric field lines.

## Electrostatic Force Essay

1297 Words | 6 PagesAccording to Coulomb’s law, net force acting on one charge due to another charge can be given as– Where, k is some constant. • Formulae says that net force experienced by any charge is directly proportional to product of charges. F q1 q2 If we increase magnitude of charges then force will also increase. • It also says, net force experienced by any charge is inversely proportional to square of distance between them. As r increases, F will decrease.

## Advantages And Disadvantages Of Resistance Training

1564 Words | 7 PagesWhen beginning resistance training, there is increased activity within the motor cortex and significant changes occur to the corticospinal tracts, meaning signals from the motor cortex travel to the working muscle more efficiently. Neural adaptations of resistance training include motor unit recruitment, size principle, rate coding, motor synchronisation and neural drive (Haff and Triplett 1994).

## Cross Sectional Area And Resistance Essay

864 Words | 4 PagesTitle: The effect of cross sectional area on resistance Introduction: The flow of electrical charge in an electrical conductor is called electrical current. Current flows only when there is voltage (difference in electrical potential energy between two points) present across a conductor. An electron’s path resembles a zigzag pattern as it goes through a conductor. While the voltage across two units encourages the flow of electrons, these collisions discourage it. These collisions of electrons and a conductor’s atoms result in a loss of electric current.

## Naphthalene Lab Report

1336 Words | 6 PagesElectrical resistance related to the ability of the substance conduct electricity. Resistivity measured by ohmmeter classifies compound with under 2000 ohms as good conductors, which are usually aqueous ionic and solid metallic, between 2000-20,000 ohms as weak conductors, and above 20,000 ohms are non-conducting such as

## Standing Waves

1990 Words | 8 PagesMoreover, as the velocity of the string increases, the wavelenght increases. As a result, it can be stated that tension and wavelenght has a direct relationship between each other. Method: The experiment will be conducted by applying tension the string, creating a standing wave, and measuring the wavelenght accordingly. By this method, I will be examining the dependence of the wavelenght of a standing wave, to the tension applied on the string. 1) I will tie one end of the string on the stand.

### Light Bulbs Shining The Light Essay

665 Words | 3 Pages### Cane Toad Research Paper

1468 Words | 6 Pages### Fixed Resistors Research Paper

982 Words | 4 Pages### Resistive Power Circuit Seminar Report

780 Words | 4 Pages### Electric Field Lines Lab Report

816 Words | 4 Pages### Electrostatic Force Essay

1297 Words | 6 Pages### Advantages And Disadvantages Of Resistance Training

1564 Words | 7 Pages### Cross Sectional Area And Resistance Essay

864 Words | 4 Pages### Naphthalene Lab Report

1336 Words | 6 Pages### Standing Waves

1990 Words | 8 Pages