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Electromotive Force and Internal Resistance of a cell

Extracts from this document...

Introduction

IB Physics SL Lab Report

Electromotive Force and Internal Resistance of a cell

Data Collection

 Voltage Current Units (in Volts)

Middle

9.60

3.05

9.50

3.68

9.40

4.16

9.30

4.84

9.20

5.55

9.10

6.06

9.00

6.83

Data Analysis

Conclusion/Evaluation

The electromotive force that we should have obtained is 12.0 Volts. (We know this

Conclusion

In order to get more accurate data, we first need to change the resistor in the Rheostat for another conductor such as plain wire. We should also have considered the thermal factor and should maintain constant temperature for the Resistor. There should be intervals between trials for cooling down. In addition, we need to use more conductive metal for the clip such as Aluminum or even Gold.

EMF and Internal Resistance of a cell

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