2 3 4 5 Mean SD x of cell 784 784 787 028284 3 x loaded 777 777 778

2 3 4 5 mean sd x of cell 784 784 787 028284 3 x

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2 3 4 5 Mean SD x of cell 78.4 78.4 78.9 79 78.8 78.7 0.28284 3 x loaded 77.7 77.7 77.8 77.8 77.9 77.7 0.08366 6 Ex 1.568 1.568 1.578 1.58 1.576 1.574 0.00565 7 Es 1.008 1.008 1.008 1.008 1.008 1.008 0 VT 1.554 1.554 1.556 1.556 1.558 1.5556 0.00167 3 I 0.0777 0.0777 0.0778 0.0778 0.0779 0.07778 8.37E-05 r 0.18018 0.18018 0.28277 6 0.30848 3 0.23106 5 0.23653 7 0.05851 6 Old Dry Cell s=51.3cm 1 2 3 4 5 Mean SD x of cell 72.1 72.1 73 73.1 73.5 72.76 0.63087 2 x 3.9 3.6 3.5 3.4 3.3 3.54 0.23021
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loaded 7 Ex 1.442 1.442 1.46 1.462 1.47 1.4552 0.01261 7 Es 1.026 1.026 1.026 1.026 1.026 1.026 0 VT 0.078 0.072 0.07 0.068 0.066 0.0708 0.00460 4 I 0.0039 0.0036 0.0035 0.0034 0.0033 0.00354 0.00023 r 349.743 6 380.555 6 397.142 9 410 425.454 5 392.579 3 29.0884 7 Daniel Cell s=54.1cm 1 2 3 4 5 Mean SD x of cell 55.1 55.5 55.4 55.3 55.2 55.3 0.158114 x loaded 14.5 15.5 16 17 17.5 16.1 1.19373 4 Ex 1.102 1.11 1.108 1.106 1.104 1.106 0.00316 2 Es 1.082 1.082 1.082 1.082 1.082 1.082 0 VT 0.29 0.31 0.32 0.34 0.35 0.322 0.02387 5 I 0.0145 0.0155 0.016 0.017 0.0175 0.0161 0.001194 r 56 51.6129 49.25 45.0588 2 43.0857 1 49.0014 9 5.15755 3 Questions 1. The voltmeter has a huge internal resistance and that is why it is connected in parallel. It thus will add up to other resistances and reduce value of Vt 2. Emf is directly proportional to I hence a graph of the two will be a straight line. The values will differ from the other calculated to systemic errors and truncation errors.
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3. The margin of experimental errors are reduced hence data is fairly close to exact. 4. Resistance of a wire directly relates to length. Using long leads will add up to the resistance. 5. The result of the equation 3 are more preferable and both have same answer 6. This results in increase of temperature and resistivity that lead to huge internal resistance in aging cells.
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  • Fall '18
  • john russo
  • Marketing, Dry cell, 3.9 cm, 14.5 cm, 54.1cm, 50.4cm

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