Practical Report: Experiment: Ohmic Resistance and Ohm’s Law Patrick Doan Mr Sadowsky 11 PHYS 71 12/9/08 Table of contents 1.0 Aim 1 2.0 Hypothesis 1 3.0 Materials 1 4.0 Method 2 5.0 Results 3 - 5.1 Qualitative Observations 3 - 5.2 Data 3-4 6.0 Discussion 5 7.0 Conclusion 6 8.0 Bibliography 7 9.0 Acknowledgements 7 1.0 Aim: To find out how current‚ voltage and resistance in a circuit are related
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__________________________ Wire Resistance and Ohm’s Law Go to http://phet.colorado.edu/simulations/sims.php?sim=Ohms_Law and click on Run Now. Wire Resistance and Ohm’s Law Procedure Part I Wire Resistance: open the PhET Simulation Electricity‚ Magnets‚ and Circuits ( Resistance in a Wire. As wire length (cm) increases‚ the resistance (Ω) _increases________ As wire area (cm2) increases‚ the resistance (Ω) _decreases_________ As wire resistivity (Ωcm) increases‚ the resistance (Ω) _increases____
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Measurement of Resistance and Ohm’s Law Section : 04 Instructor’s Name : BERNA DÜNDAR Experiment Date : 26/02/2014 Submission Date : 05/03/2014 Measurement of Resistance and Ohm’s Law Department of Physics‚Işık University Meşrutiyet Köyü‚Üniversite Sokağı‚No:2 34980 Şile‚İstanbul Abstract In this experiment we used two multimeters‚ a set of resistors‚ a bundle of connecting wires and a DC power supply. By this experiment we learned
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OHM’S LAW INTRODUCTION Ohm’s law states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points‚ and inversely proportional to the resistance between them provided the temperature remains constant. The mathematical equation that describes this relationship is: where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and
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OHM’S LAW AIM OF THE EXPERIMENT Confirmation of OHM’S LAW THEORY: It was George Simon Ohm (1787-1854) who established experimentally that the current in a metal wire is directly proportional to the potential difference V applied to its two ends‚ provided that the physical conditions such as temperature remain constant: I∞V Exactly how much current flows in a wire depends not only on the voltage‚ but also on the resistance the wire offers to the flow of electrons. Electrons are showed
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Ohm’s Law Lab Report Number Three Quyama T. Wheeler @02669651 Partner: Munah Kaye Amber Frazier Objective: To demonstrate Ohm’s law and to determine the resistance of a given resistor. Theory: Ohm’s law is the assertion that the current through a device is always directly proportional to the potential difference applied to the device. Electric current is the moving of charges from a higher potential to a lower potential. Wires of different material (a copper wire versus a silver wire‚ for
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Ohm’s Law & Power Practice Problems . 1. A toaster oven is plugged into an outlet that provides a voltage difference of 120 V. What power does the oven use if the current is 10A? Show work: Answer ________________ 2. A VCR that is not playing still uses 10.0 W of power. What is the current if the VCR is plugged into a 120 V electric outlet? Show work: Answer ________________ 3. A flashlight bulb uses 2.4 W of power when the current in the bulb is 0.8 A. What is the voltage
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the wire increases‚ the resistance of the wire will increase. Background: Some materials have consistent resistance at the same temperature regardless of how much voltage is applied through them‚ these materials are known as ‘Ohmic’ resistors. This is because they are said to obey Ohm’s law‚ which states that if a voltmetre is used to measure the voltage (V) of an unknown resistance (R)‚ and an ammetre is used to measure the current (i) through the same unknown resistance‚ then ‘R’ would be given
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Purpose 1. Experiment with a single resistor circuit. 2. Analyze how one variable affects another while the third variable is kept constant. Provide reasoning to support Ohm’s Law by collecting data to interpret and analyze a graph and write a three-step conclusion. Procedure: 1. Go to the University of Colorado – Simulations. Click on the Battery-Resistor Circuit simulation‚ then click on Run Now! 2. Using the information from “Think About This”‚ hypothesize the relationship between
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Voltage: Ohm ’s Law and Kirchhoff ’s Rules ABSTRACT Ohm ’s Law and Kirchhoff ’s rules is fundamental for the understanding of dc circuit. This experiment proves and show how these rules can be applied to so simple dc circuits. INTRODUCTION In the theory of Ohm ’s Law‚ voltage is simply proportional to current as illustrated in the proportionality‚ V=RI. As shown in this relation‚ V represent voltage which is the potential difference across the two ends of a electrical conductor and between
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