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Ohm Law

Laboratory Report

Lab #: 5

Title: Ohm’s Law

Abstract:

Experiment #5 will familiarize ourselves      with   Ohm’s           Law   to prove         how   current and    voltage          are     linearly proportional to a dc circuit. Also that the proportionality constant is the same as resistance.

Introduction:

In this lab         we will need to know what Ohm’s Law is which is V=IR. We can use  this            equation  to also find the current (I) and        the     resistance       ( R).  To         prove  Ohm’s                     Law     we need           to create         a  circuit         and measure both the voltage and the current as it changes to see if it’s linear.

Simulation:

The procedure can be found on Chapter 5 page 23-24 in Experiments in Electric Circuits 9th Edition

Experimental:

Voltage (V): 1V-9V

Current (I): ?mA

Resistance (R): 1kΩ, 2kΩ 

Results:

1 kΩ (100mA)

V (V)

0

1

2

3

4

5

6

7

8

9

I (mA)

0.0

1.016

2.039

3.06

4.082

5.105

6.128

7.160

8.190

9.216

2.2 kΩ (100mA)

V(V)

0

1

2

3

4

5

6

7

8

9

I(mA)

0.001

0.46

0.921

1.383

1.844

2.305

2.767

3.229

3.692

4.155

Discussion:

1) B

2) B

3) A

4) A 

5) At these points they show the difference in conductance on how one is doubled the other being parallel lines.

Conclusion:

In the end we were able to prove Ohm’s Law by setting up circuits to measure the

current and the voltage of theses circuits. Because of this we now have a better understanding of Ohm’s Law.

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