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# Voltage Essay Examples

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How the Length of a Wire Affects its Resistance

In my physics coursework I am going to investigate the effect of the length of a wire on its resistance. Resistance is the measure of how easy it is for current to flow through a wire. Current is the rate of flow of charge through a conductor, and it is measured in amps using an…

Investigating Basic Circuits

Introduction What is an electrical circuit? How can you manipulate components and design a circuit that will do what you want it to? This guided activity will introduce you to some components, tools, and concepts that are fundamental in electronics. It will allow you to investigate and discover: What are voltage, current, and resistance? How…

Investigating the Inverse Square Law

The inverse square law can also be applied to gravity, electric fields, light and sound. In relation to electric fields, the electric force in Coulomb’s law follows the inverse square law: ‘If gamma rays are a form of electromagnetic radiation and undergo negligible absorption in air, then the intensity, I, should vary inversely as the…

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The Resistance of a Wire

Steps 1 to 5 were repeated but the number of wires between the crocodile clips was increased by one each time until the total number of wires was The diammeter of the Constantan wire was measured using the Micrometer Screw Gauge. The diammeter was measured at two different places along the wire and the average…

Investigate factors affecting the resistance of a wire

I think these lengths of wire is suitable for the experiment. 10 lengths is good enough to show us a general pattern. Equipment- -Ammeter -A 1m ruler (to measure length of wire) -At least 8 electrical cables -Voltmeter -Power Supply unit -at least 600cm of Constantan -crocodile clips Method- 1. Connect the electrical circuit as…

Investigating Resistance

Resistance is a property of a substance that conducts electricity. Resistance opposes the flow of electricity through conductors and it depends on the PHYSICAL NATURE of the particular conductor. In this investigation I must investigate how one of these physical facts affects the resistance. I will split my investigation into four parts, I will firstly…

George Simon Ohm

Fair test & Safety In order to make the experiment there are certain procedures that I must follow. I must use the same voltmeter, ammeter and constantan wire. This is in case other ammeters or voltmeters are using different settings. To make the experiment safe we must check all wires and crocodile clips for faults….

The rate of a chemical reaction

The equation for resistance using resistivity is Resistance = resistivity x length / area of cross section of the wire The resistivity of Nichrome at 250C is 100 x 10-8 ohm-m. The radius of the wire isResistance = resistivity x length / area of cross section of the wire Resistance = 100 x 10-8 x…

The percentage energy loss when a ball Bounces

This investigation will be to determine the relationship between the length of a conductor and its resistance. The aim is to test a number of different lengths of nichrome wire to measure the resistance of each length. To ensure a safe procedure, a low voltage battery of 12 volts will be used, and the samples…

Resistance investigation

Aim: to try and find out the different resistances of a wire at different lengths and thickness. Resistance (r)= Voltage (v) Current (c) Equipment Power pack- so that we can safely control the voltage we put into the wires. Voltmeter- so that we can measure the voltage across the whole circuit. Ammeter- so that we…

The resistance of a wire in a circuit

I predict that a longer and thinner wire will have more resistance than a short and thick wire. This is because if the wire is longer, the current has a further distance to travel giving a higher resistance. Also if the wire is thicker, more electrons can pass through it at any time so the…

The relationship between voltage, current and resistance

The aim of this investigation is to see what the relationship between voltage, current and resistance is. We will be conducting two different experiments investigate Ohms law, V=I. R using, in our first experiment wire thickness as our input variable. In our second experiment, we will use wire length. In each, we will record the…

The resistance of a piece of wire

I gathered these three sets of results; I decided to gather three sets to ensure that I have got an accurate enough average for each one. Length (cm) Average Current (A) Average Voltage (V) Average Resistance (Ohms)  All the calculations in the tables on the page prior to this one are given to two decimal…

The length and area of wire affects its resistance

To investigate how the length and area of wire affects its resistance. Abstract: Aim: To investigate how the length and the area of a wire affects its resistance. Apparatus: 1 200cm ruler, 10 leads, 1 battery pack, 5 pieces of constantan wire 210cm long, 1 amp metre, 1 Volt metre, tape, scissors. Method: First we…

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