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Lab #: |
Lab #15 |
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Title: |
Current Dividers |
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Course: |
ECET 201-001 |
Abstract: The aim of this lab is to investigate the concept of current division. Current division is an application of Kirchoff’s Law. A current divider is a simple linear circuit that produces an output circuit that is a fraction of the input current. Current divider is the splitting of current between the branches of dividers.
Introduction: An experiment to verify the properties of current division is presented. The current divider is created using multiple resistors connected in parallel. It is found that if one of the resistors in the divider is greater than the other, more voltage will be dropped across it. It is also found that the greater the resistor is less current will pass through.
Experimental:
Results and Discussions: The calculated, simulated result gave out corresponding values. On the other hand the experimental results prove to be slightly different from the calculated results because we were unable to find the same exact resistors. If this experiment is redone, we can improve by pre-finding the resistors before trying to figure the calculations.
Conclusions:
Questions for lab #15:
1.) If all the resistance values in figure 15-1 were stepped up by a factor of 10, the new current would be
A: (C) One-tenth of their old value
A: (D) None of these
A: (B) I2 only
A: (A) 5.83V
A: Current takes the path of least resistance but in parallel circuits Current flows through all path in an amount inversely proportional to their resistance.
6:) If the current I in figure 15-1 is kept constant, comment on the effect of varying any single resistor on the branch currents I 3, Iv, I 4
A:
References:
Books or Magazines: Brian H. Stanley, experiments in electric circuits, Pearson 9th ed., 2009, pgs. 77-80
Lab Grading
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Score |
Weight |
Item |
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Cover Page (3 percent) |
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1 |
Lab number and name |
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1 |
Date performed |
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1 |
Team members |
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2 |
Table of Contents (2 percent) |
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Introduction (5 percent) |
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2 |
Lab station number or list of test equipment with model and serial numbers |
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3 |
Lab objectives |
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Body (40 percent) – separate section for each circuit |
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10 |
Circuit title and function |
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20 |
Measured response – including all the data required in the lab write-up |
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15 |
Comparison of the theoretical and measured responses – either plotted on the same chart if they are curves or showing the per cent difference if they are individual points. |
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15 |
Discussion – with answers to the questions and a credible explanation of any significant variations |
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General (30 percent) |
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10 |
Grammar, spelling, and punctuation |
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10 |
Plot format – independent variable on the x-axis, dependent variables on the y-axis, legible data points and curves, labeled axes with units, linear or log scales as appropriate, figure numbers and captions |
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10 |
Table format – appropriate number of significant digits, clear column headings, appropriate column widths and row heights, table numbers and captions |
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100 |
Total |
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