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# Voltmeter Essay Examples

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Certain unknown wire

To find out how resistivity changes as the length of wire is changed, and to find out the resistivity of a certain unknown wire. Equipment  Power Pack Ammeter Voltmeter  Crocodile clips  Wire  Metre rule Thermometer Method 1. Measure the diameter of wire using a micrometer, taking measurements in 3 different places along wire and take…

Of a wire varies with length

“The resistance and length of a wire are directly proportional. The longer the wire the greater the resistance. If you double the length of the wire then you double the resistance across it. This is because s the wire becomes longer, the ‘electrical slope’ (potential difference) across a given length becomes less steep. As the…

The resistance of a piece of wire

To experiment whether the length of a piece of Nichrome wire affects the resistance in a circuit containing two batteries, a voltmeter, and an amp meter. Equipment List: –  7 x connector wires  1 x nichrome wire at varied lengths 2 x 9V Battery  1 x Variable Resistor  1 x Ammeter  1 x Voltmeter Method:…

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Clean manner

This is the part of my coursework where I am going to plan an experiment that I am to analyse for my work. What we are going to do is to investigate the affects or the variables have on different lengths of constantan wire. I am going to use different lengths which will provide me…

The resistance in a piece of wire

Also if the atoms in the material are more closely packed then the electrons will have more frequent collisions and the resistance will increase. I will use Nichrome only. 4 Density of wire- In a higher density wire there will be a higher resistance because there will be more fixed ions and more collisions. 5…

Physical – Circuit

Length (centimetres) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps) Voltage (Volts) Current (amps)Length (centimetres) Voltage (Volts) Current (amps) Resistance (? )  As the table shows above, the resistance of the length 5cm and 10cm were equal, and then it suddenly decreases. This shows there’s an error; I think it happened because we didn’t set…

Resistance of a Wire Coursework

I have been asked to find out what affects the resistance of a wire. I have decided to go about this by seeing how changing the length of a wire affects the resistance. One of the first things I have to do is select which wire I am going to carry the experiment out on….

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