## Phys formal simple dc circuits lab report

Science 14 Lab 3 - DC Circuits Theory All DC circuit analysis (the determining of currents, voltages and resistances throughout a circuit) can be done with the use of three rules. These rules are given below. 1. Ohm's law. This law states that the current in a circuit is directly proportional to the potential. Laboratory Experiment #2, The Series Circuit Patrick Hoppe, 02/17/02 The purpose of this experiment is to investigate the relationship between voltage, resistance, and current as described by Ohm’s law. The DC analysis of a series resistance circuit should support Ohm’s Law and the formula for total resistance in a series circuit. Lab 3: Simple DC Circuits 1 Introduction This lab will allow you to acquire hands-on experience with the basic principles of simple electric circuits. These circuits consist of discrete resistors and light bulbs that are connected to a DC power supply using conducting wires. Discrete resistors are usually made.

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No notes for slide. Lab report 2 1, *dc circuit lab report*. Introduction Electricity is an essential part of the modern life experience, and as an engineer it is essential to know how it behaves and responds to changes in its trajectory. Part 2 determine the current and voltage through current dividers and voltage dividers.

In addition the knowledge to construct current dividers and voltage dividers will be gained and ways to determine unknown resistances will be gained as well. Carbon resistor are the components which are placed in a circuit to oppose current flow. These power does not depend on the polarity a negative sign will mean that power has been lost. But voltage division refers to the partitioning of a voltage amongst the components of the divider when **dc circuit lab report** are in series.

Answer A current divider is a simple linear circuit that produces a current which is a fraction of its input current. Current division refers to the splitting of current between the branches of the divider. These components will be connected in parallel. The current divider rule Voltage across 4. Assistant between terminals P and Q as in the figure 3.

Voltage is measured in parallel with the load and the range of your measurement can be altered by using the Range buttons. Current is measured **dc circuit lab report** series you will have to break the circuit to measure current.

You can vary the range of your measurement by using the Range buttons. To Measure Power Supply Voltage: A voltmeter is always connected in parallel across your load or power supply. Connect one of the connectors to the DMM which **dc circuit lab report** acting as an ammeter hence forth referred to as ammeter as shown in figure 1. The ammeter is connected in series with a resistor 3, **dc circuit lab report**.

Connect the DMM acting as a voltmeter hence forth referred to as voltmeter in parallel to the resistor and the ammeter.

Increase the output of the power supply from 0 to 10 volts, in steps of 1 volt increments. Take voltage *dc circuit lab report* current readings from the multi-meter and record your data in Table 1A. Reverse the polarity of the *dc circuit lab report* supply by interchanging the black and red terminals of power supply, 7.

Repeat Step 4 until your voltage is at 10 volts. Record the data in Table 1B. Part 2 of the lab Resistors are connected in series 2. Graph: 2 from table 1 Graph3: from table2 Graph 4 table 2 6 4 2 0 Power supply voltage against current 0 2 4 6 8 10 12 Power supply voltage Current measured 0 -2 -4 -6 -8 Power supply against Voltage mesured with inverted polarity graph 0 2 4 6 8 10 12 Power supply voltage Voltage measured 12 10 8 6 4 2 0 Power from source V Power vs Current graph with inverted polaryties graph -6 -5 -4 -3 -2 -1 0 Current I According to graph 2 the slope of the line is determined by change in Y over change in x.

Therefore 3. The difference between the laboratory obtained values and the theoretical values is that theoretically, ohms law will give an exact value for the resistance and in a laboratory there is a small difference in the values due to properties like heat and internal resistance. Human errors could also occur during the recording of the data acquired during the experiment. Part 2 of the lab Series circuit 2.

Therefore the difference is These once again proves that the knowledge of ohms law is a very useful tool in the *dc circuit lab report* field of studies.

The measured value for Vtotal is 4. Once again these difference may be due to human error or other properties such as internal resistance.

Parallel circuit 2. As you might have noticed this resistance is *dc circuit lab report* smaller than the total resistance in a series circuit. This is a very small value it is equivalent to 0. Conclusion In conclusion I have learned how to operate the DMM as a voltmeter and as an ammeter and further perfected my ability to make the use of colour codes to calculate the resistance of a resistor which is faster than actually measuring that resistance.

The errors due to these calculations is very small and is within the range of resistivity of the resistor. There is also the matter of the conversion of electricity from one form to another that I have noticed while doing the last exercise in which the voltage readings are quite different from the *dc circuit lab report* ones. This is due to the elements that contribute to the resistance namely 2. Ohms law is a very useful mathematical tool which can be used in the finding of theoretical values which are more or less the correct value with differences due to the above mentioned 2.

I also realised that. Furthermore I think that these findings were useful in the sense that I now understand more about electrical circuits than before and it helped me to understand the importance of parallel circuits as they drastically reduce the total resistance of a **dc circuit lab report.** Lastly these lab and that it will contribute to the foundation of my overall engineering career by giving me a broad knowledge of all branches of engineering.

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Laboratory Experiment #2, The Series Circuit Patrick Hoppe, 02/17/02 The purpose of this experiment is to investigate the relationship between voltage, resistance, and current as described by Ohm’s law. The DC analysis of a series resistance circuit should support Ohm’s Law and the formula for total resistance in a series circuit. Oct 31, · Lab report 2 1. Introduction Electricity is an essential part of the modern life experience, and as an engineer it is essential to know how it behaves and responds to changes in its trajectory. When a switch is closed in a DC circuit, charges in the wire do NOT instantaneously start moving at the speed of light. Closing the switch merely declares a direction of high to low potential - it establishes an electric field in the circuit.