Resistance H/W

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  • Created by: //Destiel
  • Created on: 07-02-17 19:53

Note: I did the homework via PC becuase of the fact that I wouldnt have room on the sheet. Sorry. I also missed some of the questions as I thought they wouldnt be completable on the PC, I have done them in my book though.

1) The control variable in the experiment would be the constantan wire which would be constantly used throughout the experement and the length affects resistance greatly as the longer the wire becomes the more resistance becuase there are more ions/ atoms within the wire that the electrons can hit off of.

2) (No. 5 on the sheet) - The relationship between length and resistance is the longer the wire becomes the greater resistance because of the increase of Ions and atoms within the wire, and the shorter the wire becomes the less reistance it will have becuase there would be less of a chance of an electron hitting an ion.

3) If you were to use the mains then the experiment can become a lot more dangerous becuase it would be a high voltage that can be unsafe, While the low voltage supply isnt as big as a risk and cannot cause as much damage as a high voltage.

4) If you would only change one and the PD would change then the experiment could become a hazard to saftey when trying recieve results, while when changing two variables makes the experiment safer.

Conclusion:

1) The factors which affect the resistance of a wire is length becuase of the amounts of…

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