factors affect the resistance of a conductor‚ and the mathematical relationship that exists between these variables. Hypothesis Copper wires would be a better conductor than nichrome wires because it would yield less resistance when they have same cross-sectional area‚ length and temperature. Resistance would be increased when length wires increased. Resistance would be increased when cross-sectional area of wires decreased. Resistivity of wires is a factor of affecting the resistance. Background information
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Aim: To investigate the factors that affect the resistance in a conductor. The main factors that affect the resistance in a conductor are: · Length · Temperature · Cross sectional area · Material · Magnetism The factor that we are going to change is the cross sectional area. Hypothesis: I think that the higher the cross sectional area‚ the lower the resistance in the conductor will be. This is because the Resistance in a metal conductor happens because as the electrons move through the material
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CHAPTER 1 ELECTRICAL FORMULAS OHM’S LAW/POWER FORMULAS R x I2 E x I P R P E E2 RxI R P I P x R E I P I E R E R P I2 E2 P P = Power = Watts R = Resistance = Ohms I = Current = Amperes E = Force = Volts 1-1 OHM’S LAW DIAGRAM AND FORMULAS E I E = I x R I = E ÷ R R = E ÷ I R Voltage = Current x Resistance Current = Voltage ÷ Resistance Resistance = Voltage ÷ Current POWER DIAGRAM AND FORMULAS P E I = P ÷ E E = P ÷ I P = I x E I Current = Power ÷ Voltage
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Potential Difference in Electrical Circuit Discussion: We conducted this experiment to test out the relationship of potential differences and currents in series and parallel circuits. We were to indicate the special properties that the potential differences and currents had with both types of circuits. In short‚ we were to test out Kirchhoff’s laws. Before starting the lab‚ we had to pick three different resistors and we were to calculate the values for the total resistances‚ potential differences
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Electrical Cable Cross section is just a two-dimensional view of a slice through an object. An often asked question: How can you convert the diameter of a round wire d to the circle cross section surface or the cross-section area A (slice plane) to the cable diameter d? Resistance varies inversely with the cross-sectional area of a wire. | ------------------------------------------------- Top of Form | Wire diameter d | unit | | | Cross-sectional area A | unit2 | | |
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1 1.0 INTRODUCTION TO ELECTRICAL CIRCUITS 2 Basic Quantities and Units in Electrical 2 Quantities 2 Units 3 Factors Affecting Resistance 4 Length of the Conductor: 4 Area of Cross-Section of the Conductor: 4 Electrical Resistivity of Substances 5 Effect of Temperature 5 Components of Electrical Circuits 6 Components of an Electric Circuit 7 Measuring Current‚ Voltage and Resistance 8 Measuring voltage 8 Measuring current 9 Measuring resistance 9 Ohm’s Law‚ Electricity
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Physics Coursework- Ohm’s Law Aim: To investigate the factors of affecting the resistance of a wire. In this experiment I will be using a metal nichrome wire to show the resistance when the length and width is changed. Variables Variables that I am going to keep the same. Variables that I am going to change. Width- 0.36mm2 Material- Nichrome wire Voltage- 2V Temperature- Room Temperature Length- 10cm‚ 20 cm‚ 30cm‚ 40cm‚ 50cm Material- Nichrome Length- 50cm Voltage- 2V Temperature- Room
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Data Analysis The investigation I did was to find the resistance of a piece if wire. The piece of wire is my dependent variable throughout the investigation. I changed the length of the wire in order to measure the resistance of each length. Plan In this investigation‚ a simple circuit will be set up to read the voltage and current when the length of the wire changes. The length will range from 10cm-80cm with intervals of 10cm. The length of the wire will be changed by moving the crocodile clip
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Experiment number : 1! ! ! ! ! Title : Resistance Color Code ! ! ! Performed by : El Batina Bokhoum Engineering course : ENG-102 Partners : Betsy Batista Lab Day/Hour : Tuesday 6-8 pm! Jermaine Lockley ! Lab Instructor : Dr. Gontar ! Date Performed : 09/09/14! Date Due: 09/16/14! ! Purpose : The purpose of this lab is to be able to measure the resistance of color code ! .The experiment will help us to interpret and record the ohmic value of a resistor when given
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Physics GCSE coursework: Resistance of wire Aim: To investigate if the length of wire affects its resistance. Prediction (Hypothesis): I predict that the longer the wire the higher the resistance‚ and the shorter the wire the lower the resistance. Knowledge: Resistance is that property of electric components that turn electric energy into heat in opposing the passing of an electric current.It can be beneficial‚ as in electric heaters‚ or a pest‚ as in light bulbs‚ where the heat
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