No crystal structure is perfect. There are a few data points that are farther away from the line of best fit than the others, but they are still consistent with the general trend.
Also, the maximum current that can be drawn from a battery is now reduced due to this internal resistance.
The system converts chemical energy into electrical energy until there are no reactants left to undergo a redox reaction. Using the same piece of wire throughout the experiment meant its temperature rose slightly over time, which may have affected my results.
I will also control, using the power pack, how many volts pass through the wire. I will place one crocodile clip at 0cm on the wire and the other at 5cm to complete the circuit.
This confirms the first part of my prediction: A battery has resistance, capacitance and inductance, and the term impedance includes all three in one model. Battery University monitors the comments and understands the importance of expressing perspectives and opinions in a shared forum. Discussion Overall, my results are very consistent with my predictions.
There are possible sources of error that might have led to inconsistent results, such as a kink in the wire. However, all communication must be done with the use of appropriate language and the avoidance of spam and discrimination.
The capacitive reactance decreases with higher frequency while the inductive reactance increases. This apparatus forms our two wells or potentials connected by a medium through which the excess electrons travel. Since both readings are valid, yet far apart, the user must consider the application.
An electrolyte is a solution that effusively reacts with metals, separating them into their constituent ions. The individual components of the Randles model are molten together and cannot be distinguished.
I will also ensure that the wire does not heat up too much by confirming that I do not set the voltage too high on the power pack and by maintaining the same the voltage for every reading.
The ohmic resistance is the same with direct current DC and alternating current AC. Below is a table illustrating the effect of changing the variables see Table 2: In addition, I will make sure I turn the power pack off after each reading.
There are no anomalous results that I would consider to be far away from the line of best fit. However, due to my line of enquiry, I will only change the length of the wire.
I think that the range of my results was sufficient enough for me to draw a valid conclusion about how the length of the wire affected the resistance. In addition, the DC load method gets similar readings from a good battery that is partially charged and a marginal battery that is fully charged.Internal Resistance is a measurement, this measurement must be made by very specific battery Internal Resistance meters.
Any one who does pay the price so to get one, he does starting to collect personal experiences with it, regarding all type of battery cells. Did anybody do this coursework before? I really want a high grade & although there's a vague instruction sheet I want to know what you did to achieve a decent grade on it!
Btw the coursework is to measure the internal resistance of a battery. May 04, · Basically I want to Calculate the internal resistance of a solar cell. I set up a circuit with a voltmeter across the solar cell and an ammeter and variable resistor in series with the solar cell.
The variable resistor is the load. Internal resistance 1 kohms 20 ma scalable maximum As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects.
Internal resistance Resistance can be defined as an object’s ability to hinder the flow of electrons passing through a conductor.
Resistors are made of insulators, such as carbon or plastics, materials that forbid the flow of electrons through them. Apr 19, · An investigation into the resistance of a wire. Free GCSE physics coursework killarney10mile.coms:Download