experiment was to measure the Voltage and Current. Upon completion of this experiment I was able to: 1) Set the DC power supply to a specific voltage. 2) Properly connect the voltmeter to measure voltage. 3) Measure current with the ammeter. 4) Measure resistance with the ohmmeter. 5) Determine the accuracy of a given meter reading. Theory The theory required for this experiment was an understanding of Ohm’s Law. Ohm’s Law is the algebraic relationship between voltage and
Factors Which Affect the Resistance of a Wire To start off this experiment I feel that it is suitable to explain the main facts of this study. Below is a section explaining the resistance in detail. Facts on Resistance: I have shown how resistance occurs. · WIRE · ATOMS · ELECTRONS Resistance occurs when the electrons traveling along the wire collide with the atoms of the wire. These collisions slow down the flow of electrons causing resistance. Resistance is a
to the nearest millimetre. The output variable will be the readings on the ammeter and voltmeters. The controlled variables will be the length of wire and the current being passed through the wire. The length of wire will stay the same and will already be measured to 50cm for us. The current will be kept on the same level using the same power pack. Apparatus Þ Power pack Þ Banjo board Þ Ammeter and Voltmeter Þ Wires Þ Bulb Þ Wires to connect the apparatus Þ Ruler
The ammeter dancer has semi-flexed elbows while the professional dancer are further away from their body and their elbows are more extended. The arms should of the dancer should look like they are holding a beach ball. With the professional dancers arm being further away from their body it means that they have a great moment of inertia. The ammeter dancer also does not have a wide base for support while the professional dancer
difference (V) in the circuit. Dependent Variable: The current strength (mA) in the circuit. Controlled Variable: The temperature in the circuit is kept constant throughout all tests. Apparatus: A circuit board. 6 Crocodile wires. A light bulb. An ammeter. A voltmeter. A rheostat resistor. Three 1,5V cells forming a 4.5V battery. Diagram: Method: Safety precautions: Ensure that the circuit is away from any water. Ensure that all apparatus being used is in working condition and has its certificate
Independent Variable- the independent variable for this experiment are the volts, I will be using 1-12v. Independent Variable- The independent variable would be the reading we get of the ammeter. Apparatus- * 5 wires * 1 filament bulb * 1 resister * 1 voltage meter * 5-10 crocodile clips * Ammeter Method-First of all I drew the circuit so that it easier for me when I go to set up all the equipment, than I will to connect what to what. After drawing the circuit I gathered all
Varying the Voltage Across a Fixed Value Resistor For my project I am going to investigate the affects that occur when varying the voltage across a fixed value resistor. I will observe things that will happen. I will look at a variety of possibilities, and hopefully I will find out what happens when the voltage is changed. Planning ======== Things the voltage may effect when varied are: Current Heat Resistance I have decided to change the voltage and measure the current
Voltmeter Ø Ammeter Ø 0-1mA shunt Ø Wires connecting apparatus Ø Ruler Ø Scissors Ø Graphite paper Ø Clips holding the graphite paper The Method Ø One followed the above diagram to attach all the wires to the different pieces of apparatus. Ø I attached the clips to each end of the graphite paper. Ø I attached the 0-1mA shunt to the ammeter. Ø I read from the ammeter each time I cut down the length by using scissors. I did this till the ammeter got a reading near
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
terminal to the positive terminal. The voltage of a battery is a measure of the energy delivered by the electrons to the lamp. The unit of voltage is the volt. Voltage is sometimes called potential difference. Current is measured using an ammeter. An ammeter must always be connected in series with the appliance taking the current to be measured. Resistance is what links current and voltage together. Resistance is the property of a substance which opposes the flow of current is called its resistance
type of light, light intensity, distance between light source and metal dependent: current magnitude controlled: temperature, pressure Apparatus and materials: zinc plates, copper plates, ultraviolet light, light bulbs, power source, ammeter, voltmeter, coulombmeter, sandpaper, wires, crocodile clips, caesium-antimony photocathode Method for the control of variables: the temperature and pressure are kept constant throughout the experiment; the experiment is conducted within a
Electroplating Experiment Aim To find the amount copper gains or loses on the electrodes using different amounts of current each time during electrolysis. How the changing of current affects the electroplating of copper. Introduction Electroplating is generally carried out in order to improve the appearance or corrosion resistance of the surface of a metal by electrodepositing a thin layer of metal ion on it. The metal substrate to be coated is made by the cathode in an electrolytic
Establishing the Current-Voltage Relationship For a Metal Conductor Investigation- To Establish The Current- Voltage Relationship For A Metal Conductor. In this experiment I will be investigating the current- voltage relationship for a metal conductor. The variables that I need to keep constant in this experiment are: 1. Thickness of the wire. 2. Length of the wire 3. Input of voltage coming from the power supply should be kept constant. 4. Temperature of wire should be
voltmeter is set up in parallel and the ammeter in series. Battery[IMAGE]Circuit Diagram: I will work out from the readings of the voltmeter and ammeter the resistance in the circuit. This can be done using the formula: R=V/I Where R= Resistance, V= voltage, I= Current. This means I can find and record the resistance. This will work out the resistance in ohms. Equipment: * Power supply * Constantan Wire 1m * Voltmeter * Ammeter * Metre ruler
voltage or potential difference 10 times at each length, but in the results table and graph I have only used the first result from each measurement. APPARATUS Meter stick mounted with wire 1 Ammeter 1 Voltmeter Wire 1 Variable resistor Crocodile clips METHOD 1. Attach the ammeter and the voltmeter to the meter stick and variable resistor. 2. Connect the variable resistor to the power supply and the meter stick. 3. Plug power supply into the mains and switch on.
constant). Apparatus: 1. Power Supply 2. Variable resistor 3. Ammeter 4. Voltmeter 5. Resistors 6. Electric wires Diagrams: ========= R1: R2: R1 + R2 (in series): R1 + R2 (in parallel): Method: 1. Set up the apparatus 4 times as shown in the diagrams above 2. Set the power supply to 6v 3. Set the variable resistor to maximum resistance 4. Switch on the power and note the ammeter and voltmeter readings 5. Reduce the resistance of the variable resistor
Apparatus: · Ammeter · Variable resistor · Constantan wire · Connecting wires · Power pack I connected the above apparatus in series, using the connecting wires. Below is a circuit showing this connection. Below are samples of the wires I used: Thick wire: Fairly thick wire: Thin wire: Fairly thin wire: Method: I connected the power pack, ammeter, variable resistor and the constantan wire in series using the connecting wires. I then set the ammeter on zero, and
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. F Nickel chrome wire was then measured to discover the cross
How the Rate of Electrolysis is Affected by Changing the Current in the Circuit When chemical compounds are in a molten state, or if they are dissolved in water or other liquids their molecules become "separates into positively and negatively charged components, which have the conduct electricity", or they become ionized [IMAGE]Electrolysis is the process of breaking down or 'decomposing' a compound, by running an electric current through a chemical compound when it is ionized. This is
length increased so would resistance, as the more the electricity has to flow through the more resistance it will encounter. We would do this experiment by, after finding the appropriate shunt, finding an appropriate width to use, to place the ammeter reading at the low end of the scale, for reversed reasons as for the width experiments. We would then choose a length and gradually reduce the length, taking recordings. Everything else would be the same as the width experiment.