Investigating Resistance of a Wire The aim of this experiment is to find out how the resistance changes as the length of wire changes within the circuit changes. At the end of this investigation I will come to one of five possible conclusions which are: -the resistance increases as the length of wire increases, or -the resistance decreases as the length of wire increases, or -the resistance is constant as the length of wire changes, or -the resistance increases as the length of
Investigating the Resistance of a Wire We have been given the task to investigate the resistance of different wires, I am firstly going to start by explaining what resistance is, why it occurs, what causes it, and how it can be used to our advantages. Resistance is a term used to describe the property that various materials possess to restrict or inhibit the flow of electricity. Whether or not a material obeys Ohm's law, its resistance can be described in terms of its resistivity.
Investigating Factors Affecting Resistance of a Wire Aim --- Investigate what factors affect the resistance of wire, however in this experiment I am going to monitor how the length of a wire affects the resistance of a wire if the current is kept the same. Method ------ 1) Arrange apparatus as shown in the Diagram: 2) Cut a length of wire over a meter long and sellotape to a meter ruler. 3) Attach one positive crocodile clip to 0cm, and move the negative up/down, stopping
Internal Resistance Investigation I will conduct the following investigation with the aim to find the internal resistance of a lemon battery, which I will construct myself. The variables that could affect my experiment are as follows: · Size of lemon - I will conduct my experiment in no longer than an hour, allowing me to use the same lemon for all results · Size of metal electrodes - I will use the exact same electrodes throughout the whole experiment ·
Investigating the Factors that Affect the Resistance of a Wire Aim To study the factors which affect the resistance of a wire. Background Information Although current and potential difference measure different things, they are related to each other. In 1826, Georg Ohm discovered that doubling the p.d. doubled the current. (Taken from Ohm's Law: the current flowing through a metal wire is proportional to the potential difference across it (providing the temperature is constant)
Investigating the Effect the Thickness of a Wire has On Its Resistance Equipment: Nickel Wire cut into 10 pieces of 30cm length (Ruler, Pliers) Two crocodile clips Five Pieces of Wire Power Source Variable Resistor Ammeter Volt Meter Method: ======= F The Circuit was set up as in the circuit diagram overleaf with a power source of 5 Volts, an ammeter, crocodile clips (holding wires), and a variable resistor in series and a Voltmeter in parallel with the wires
Investigating the Resistance of a Wire The aim of this investigation is to see how the length of a wire affects its resistance. Background knowledge To make current flow through a conductor, there must be a potential difference (voltage) across it. As the current continues to flow there are certain factors which increase the resistance; Length of wire: as the length increases there will be a higher percentage of fixed atoms, therefore the electrons carrying the charge will collide
Investigating the Resistance of a Wire Planning -------- Aim The aim of my investigation is to investigate how length affects the resistance of a wire. Resistance is the force, which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. Resistance is measured in ohms. Resistance occurs when the electrons travelling along the wire collide with the atoms of the wire. These collisions slow down the flow
Investigating How the Length of the Wire Affects the Resistance of the Current Passing Through Wire Aim For this experiment, my aim is to investigate how the length of the wire affects the resistance of the current passing through the wire. Hypothesis and Scientific Knowledge When electric current passes through a conductor, there is always a resistance against it. The resistance varies between different types of materials. Although all metals are conductors, some have a higher resistance
Investigating How the Length of a Wire Affects Its Resistance Planning: Risk Assessment: * I will handle the power supply carefully. * I am going to only use a maximum voltage of 2 volts. * I will be careful when handling the mains equipment. * I will make sure I have a clear space to work in and nothing on the floor around me. In this investigation, I will set up a simple circuit to be able to read the voltage and current when the length of wire changes, so I then can work
Investigating the Factors that Affect the Resistance of a Metal Conductor All metals offer some resistance to the flow of an electric current. Several factors affect the resistance: * Temperature * Length * Cross-section area * The metal or alloy the conductor is made of This investigation looks at the effect of length. Background Information ====================== Why does resistance occur? ========================== Resistance occurs because the electrons in
Investigating the Relationship Between the Length of a Wire and Its Resistance Aim: To find the relationship between the length of a wire and it’s resistance. Planning: We conducted a preliminary experiment to help us conduct the real experiment. In this preliminary experiment we aimed to find out what thickness and type of wire would be suitable for the experiment, and what range of lengths of wire and range of voltages and currents would be suitable for measuring. We discovered that
Investigating how the Resistance of a Constantan Wire is Affected by Its Length Introduction: In this experiment we will be investigating how changing the length of a piece of Constantan wire will affect the resistance. Therefore the length will be an independent variable and all of the other variables we will try to keep the same. The other variables included in this experiment are temperature, thickness of wire and density of wire. Resistance is a force, which opposes the
Investigating How Different Lengths of Wire Affect the Resistance in a Circuit Hypothesis: I predict that; the longer the wire, the more resistance there will be. So if the length of the wire were to double, so would the resistance. The reason for my prediction is: The flow of electrons is called a current, the electrons are constantly hitting atoms, which causes resistance. If the same amount of current is passed through a longer piece of wire, there will be more collisions, hence more
Investigating the Resistance of a 12 Volt Bulb When the Current Changes Prediction: I predict that as the current increases the temperature of the lamp will also increase; therefore the resistance will also increase. I know this because I have read it in the AQA syllabus. Plan Safety: I need to ensure the safety of myself and others by making sure that the experiment is conducted accurately and safely. - Apparatus should be placed in a safe place and put away safely. - Electrical
Investigating Factors that Affect the Swinging Of a Pendulum Aim Our aim is to find out whether changing the variables of the swinging pendulum affects the speed. Preliminary Work In order to find out which variable/s affect the swinging of a pendulum, I need to test all the variables available. There are three variables we will be investigating: * The length of the string * The mass of the pendulum * The angle from which the pendulum is swung For each experiment, I will
Investigating How the Resistance of a Piece of Graphite Paper is Affected by the Width of the Graphite Paper Planning I will be investigating how the resistance of a piece of graphite paper is affected by the width of it. The aim of the investigation is to carry out a suitable experiment to find various different resistances for various different widths of graphite paper. Preliminary Experiment The purpose of the preliminary experiment is to find a suitable length of graphite paper
Investigating Factors that Affect the Amount of Heat Produced in Neutralisation I am going to investigate factors that affect the amount of heat produced in neutralisation. My objective is to plan and conduct an experiment from which I should be able to draw a firm conclusion that will either prove or disprove any predictions I have made. The factor I will be investigating is concentration
Investigating Rates of Reactions My aim is to investigate what factors affect the rate of reaction between magnesium and hydrochloric acid. The factor that I will be focusing on is the concentration of Hydrochloric acid. [IMAGE]Reaction Equation: Mg (s) +2HCl (aq) = MgCl2 (aq) +H2 (g) Magnesium + Hydrochloric Acid = Magnesium Chloride + Hydrogen There are several different variables you can such as temperature, concentration; surface area and whether or not to use a catalyst or not
Investigating Factors Affecting the Heat of Combustion of Alcohols PLANNING SECTION Introduction ------------ Alcohols are organic substances, and consist of Hydrogen, Oxygen and Carbon. All alcohols are toxic but the amount that can be tolerated by the human body varies for different alcohols. For example drinking small amounts of Methanol can lead to blindness and even death. Ethanol is the only alcohol that can be drunk safely and is found in all alcoholic drinks. Throughout this