The voltage in will change Essay Example for Free

The potential in bequeath change EssayAim I am sack to carry out an investigation to find how the vindication of electric resistance 1 affects the output electric potential of a potential divider round There are several different factors that can affect the potential out, when the resistance of Resistor 1 is changed. List of key factors 1. Voltage in 2. Voltage out 3. Resistor 1 I collect chosen resistivity 1 because, it is an advanced experimentation, and impart give me more to investigate/analyse and so I shall choose this variable. And I impart be able to depict just how the resistance affects the Voltage out (Vout. ) 4. Resistor 2 5. Resistor 1 and 2 6. distance of the conducting wire 7. Type of wire.8. Ammeter (The equipment used to measure the voltage) 9. Voltmeter 10. Digital multi-meter 11. Material of wire 12. Cross section of wire These factors if not controlled can affect the experiment and give me false data. The other factors must be controlled to p ropose sure that I am measuring the affects of the correct (stimulation variable) that I have chosen, (in this case the resistance of resistor 1. ) These factors are whopn as the control variables and they give you something to compare your results with, (and make your experiment repeatable, as you forget have kept the conditions for your experiment the same.) The output variable is the variable that lead change due to the input variable in this case the Voltage out. (The other factors are mainly kept the same for accuracy. ) In my experiment I go forth be using a potential divider circuit (A circuit diagram of two fixed resistors in series. They can be used to split the voltage of a circuit) to find out how changing the resistance of Resistor 1 affects the total output voltage of a potential divider circuit. I will take all possible variables into consideration and I will try to make this experiment one which will create reliable and as accurate results.The experiment will be c arried out in the school science lab where I will take the results and then conclude my experiment to prove whether my hypothesis correct or false. I predict that, when the resistance for Resistor 1 is increased the voltage out (Vout) will decrease. I know this because, the more particles and electrons thither are in a wire, the harder it is for the electrons (the sure) to get past the atoms (the resistance) and around the circuit to the positive end. Diagram of an atom The nucleus of an atom consists of neutrons (neutral) and protons (positively shootd), which are in a fixed stationary position.The electrons (negatively charged) on the outer shells provided can head for the hills freely at high speeds. What is current? A coat wire is do of metal atoms most metal atoms have one or two electrons in their outer nil level. When there is no conducted electricity present, the electrons will and can move freely in any direction. (Diagram of a metal compound, electrons moving fre ely, purple electrons. Green atoms) Delocalised electrons are spread across more than one atom. Electrons in materials are usually bound to one atom. Atoms are held together by the interactions of the charges on different atoms.In some cases, electrons can be shared between atoms, and are then called delocalised. The electrons will randomly move around the whole molecule structure and we end up with a regular lattice of metal atoms in a sea of negatively charged electrons. When electricity is introduced however the negatively charged electrons will instantly begin to move through the wire in the same direction (towards the positively charged end) this is an electric current, a current is the flow of charge in a wire or the execution of the negatively charged electrons through the wire.The electrons move like this because of the voltage ( dexterity/ role) which pushes the current around the circuit. The energy is transferred from the force play pack to the electrons that will equ ally share and give out the energy to each component in the circuit. By the time the electron has reached the end of the circuit it will have lost all the energy it will have in gained at the start (energy will be lost through components and resistance. ) unsusceptibility is the opposition that the electrons will experience while flowing through the wire.An electron travelling through the wires encounters resistance. An electron does not travel in a direct route instead it adopts a zigzag style due to the countless collisions with the atoms in the conducting material. When electrons move against the resistance, friction is generated. The friction produced by electrons flowing against the resistance will cause the wire to heat. (The hotter the wire, the higher the resistance. ) Resistance depends on the material, cross section and length. Resistance limits the amount of current flowing through the circuit for a given voltage of the power supply.For a circuit to ply there must be n o breaks, if there is a break then everything stops. An electric charge must also go all the way round the circuit. When a wire heats up they will act differently and a blockage will be made. This is a sign of Resistance. I have chosen to keep the voltage at 12 volts as this is the highest number of volts possible on the power pack. Using a higher voltage In, means that I will get higher results for Vout. I will also be able to translate them in numbers that are easy to give care and work with, and a more significant range.Even though I have chosen my voltage to stay at stay 12 volts due to the power packs being not completely accurate, the voltage In will, change because I will be purposefully changing the resistance of the circuit. Everything in a circuit is not mutually exclusive when one factor is changed every other factor will also change, as they are all interlinked and dependent on each other. As I know that the Voltage In will change, I will make sure that every time I te st the resistance of the circuit I will also check the voltage of the circuit and record the result for that down too.