An Investigation To Find Out About The Resistance Of A Wire!

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An Investigation To Find Out About The Resistance Of A Wire!

Introduction

In this experiment I will be trying to find out how the resistance in a circuit changes as the length of a piece of wire changes by getting longer or shorter.

Prediction

My prediction is that the shorter the wire gets the resistance will decrease with it and the longer the wire is the higher the resistance will be.

I have found through research on the Internet, some evidence that can back up my prediction, this research is that a wire is made up of molecules, which act as an opposition to the flow of electrons. This means that longer the length of wire the more molecules there are to oppose the flow of electrons which will result in a higher resistance for a longer piece of wire and a lower resistance for a shorter piece of wire.

All About Resistance

Resistance is the time it takes for the current to go round a circuit, it is measured in ohms.

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The way I will calculate the resistance is:

 RESISTANCE (Ohms)    =              VOLTAGE       (Volts)

                                                 

                                                   CURRENT       (Amps)

Equipment

The following is all the equipment that I shall use:

  • Crocodile Clips
  • Wire
  • Voltmeter
  • Ammeter
  • ...

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