Difference between revisions of "CircuitJS/C2/Ohm's-Law-using-CircuitJS-simulator/English"
From Script | Spoken-Tutorial
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|| Slide:1 | || Slide:1 | ||
| − | |||
|| Welcome to the spoken tutorial on Ohm’s Law using '''circuitjs''' simulator. | || Welcome to the spoken tutorial on Ohm’s Law using '''circuitjs''' simulator. | ||
| − | |- | + | |- |
|| Slide 2: | || Slide 2: | ||
| − | Learning | + | Learning Objectives |
|| In this tutorial, we will learn how | || In this tutorial, we will learn how | ||
| − | * | + | * Voltage, resistance, and current are related in a circuit. |
| − | * | + | * Ohm's Law helps to understand this relationship. |
| − | |- | + | |- |
|| Slide 3 | || Slide 3 | ||
System Requirement | System Requirement | ||
|| To record this tutorial, I am using: | || To record this tutorial, I am using: | ||
| − | * | + | * '''Ubuntu Linux ''' 20.04 OS |
| − | * | + | * '''CircuitJS''' Application |
| − | |- | + | |- |
|| Slide 4: | || Slide 4: | ||
| − | + | Prerequisites | |
|| To follow this tutorial, you should have a basic knowledge of | || To follow this tutorial, you should have a basic knowledge of | ||
| − | * | + | * Electrical circuits |
| − | |- | + | |- |
|| Slide 5: | || Slide 5: | ||
What is Ohm's Law? | What is Ohm's Law? | ||
| − | + | || Ohm’s Law equation is '''V = I''' x '''R'''. | |
| + | '''V''' is the voltage across the conductor measured in Volts. | ||
| − | + | '''I''' is the current flowing through the conductor measured in Amperes. | |
| − | + | ||
| − | + | '''R '''is the resistance provided by the conductor measured in Ohms. | |
| − | + | |- | |
| − | + | || Show the diagram | |
| − | |- | + | |
| − | || | + | |
Ohms’ law circuit | Ohms’ law circuit | ||
| Line 54: | Line 51: | ||
For this experiment, we need | For this experiment, we need | ||
| − | * | + | |
| − | * | + | * 4 DC Voltage Supply of 1.5 Volts |
| − | * | + | * 1 Resistor |
| − | * | + | * Voltmeter |
| − | * | + | * Ammeter and |
| − | |- | + | * Switch |
| − | | | + | |- |
| + | || Show the Circuit image. | ||
|| We will learn how to create the same circuit in '''Circuitjs''' simulator and understand the concepts. | || We will learn how to create the same circuit in '''Circuitjs''' simulator and understand the concepts. | ||
| − | |- | + | |- |
| − | | | + | ||type ./circuitjs1 at the terminal prompt. |
|| Let us open the '''circuitjs''' interface as shown. | || Let us open the '''circuitjs''' interface as shown. | ||
| − | |- | + | |- |
|| Click on the '''Draw''' option | || Click on the '''Draw''' option | ||
| Line 73: | Line 71: | ||
Click on the '''Draw''' option in the menu bar. | Click on the '''Draw''' option in the menu bar. | ||
| − | Now, select''' Add resistor'''. | + | Now, select ''' Add resistor'''. |
Click and drag to draw a resistor as shown. | Click and drag to draw a resistor as shown. | ||
| − | |- | + | |- |
|| Show the path to find the DC power supply and draw it | || Show the path to find the DC power supply and draw it | ||
| − | Draw => Inputs and Sources => Add Voltage Terminal | + | '''Draw''' => Inputs and Sources => Add Voltage Terminal. |
| + | |||
| + | Right-click on the voltage source component >> select '''Swap Terminals'''. | ||
|| Now, let us add the DC power supply to the circuit. | || Now, let us add the DC power supply to the circuit. | ||
| − | Click on Draw, then go to '''Inputs and Sources''', and select '''Add Voltage Source (2-terminal)'''. | + | Click on '''Draw''', then go to '''Inputs and Sources''', |
| + | |||
| + | and select '''Add Voltage Source (2-terminal)'''. | ||
| + | |||
Draw the voltage source above the resistor. | Draw the voltage source above the resistor. | ||
| Line 94: | Line 97: | ||
You will notice the polarity of the voltage source changes. | You will notice the polarity of the voltage source changes. | ||
| − | We want a DC voltage source of 1.5 volts, but it | + | We want a DC voltage source of 1.5 volts, but it is set to 5 volts by default. |
To change it, right-click the voltage source. | To change it, right-click the voltage source. | ||
| Line 103: | Line 106: | ||
Delete the value 5 and type 1.5 and click the OK button to save the change. | Delete the value 5 and type 1.5 and click the OK button to save the change. | ||
| − | |- | + | |- |
| − | || | + | || Right-click on the DC voltage source >> select the '''Duplicate''' option. |
|| We need three more of these same DC voltage sources connected one after another. | || We need three more of these same DC voltage sources connected one after another. | ||
| Line 113: | Line 116: | ||
Move and link all four DC voltage sources together in a row as shown. | Move and link all four DC voltage sources together in a row as shown. | ||
| − | Make sure | + | Make sure that parts don't overlap when you connect them. |
Next let us label these voltage sources. | Next let us label these voltage sources. | ||
| Line 130: | Line 133: | ||
Arrange the label for a neat look. | Arrange the label for a neat look. | ||
| − | |- | + | |- |
|| Draw => Outputs and Labels => Ammeter | || Draw => Outputs and Labels => Ammeter | ||
| − | || To measure the current in the circuit, we | + | || To measure the current in the circuit, we will use '''Ammeter'''. |
| − | Click on the '''Draw''' button, then go to '''Output and Labels''' and select '''Add | + | Click on the '''Draw''' button, then go to '''Output and Labels''' and select '''Add Ammeter'''. |
Now, connect the ammeter to the resistor in the circuit. | Now, connect the ammeter to the resistor in the circuit. | ||
| − | |- | + | |- |
|| Draw => Outputs and Labels => Voltmeter / Scope probe | || Draw => Outputs and Labels => Voltmeter / Scope probe | ||
|| Let us add a '''voltmeter''' across the resistor to see the amount of voltage passing through it. | || Let us add a '''voltmeter''' across the resistor to see the amount of voltage passing through it. | ||
| − | Click on '''Draw''' and select '''Outputs and Labels | + | Click on '''Draw''' and select '''Outputs and Labels'''. |
| − | Then | + | Then select '''Add Voltmeter/Scope probe'''. |
Place it below the resistor as shown. | Place it below the resistor as shown. | ||
| − | |- | + | |- |
|| Draw => Passive Components => Switch | || Draw => Passive Components => Switch | ||
|| We also need a Switch to turn ON and OFF the circuit. | || We also need a Switch to turn ON and OFF the circuit. | ||
| Line 153: | Line 156: | ||
Drag and connect the switch next to the '''Ammeter'''. | Drag and connect the switch next to the '''Ammeter'''. | ||
| − | |- | + | |- |
| − | || | + | || Point to the components. |
|| We have all the required components in the work area. | || We have all the required components in the work area. | ||
Now let's connect the components using wires. | Now let's connect the components using wires. | ||
| − | |- | + | |- |
|| Add Wire | || Add Wire | ||
Draw => Add wire | Draw => Add wire | ||
| − | || From the '''Draw''' menu, select '''Add wire | + | || From the '''Draw''' menu, select '''Add wire'''. |
Connect the resistor and voltmeter as shown. | Connect the resistor and voltmeter as shown. | ||
| Line 170: | Line 173: | ||
This dot represents a junction which also implies the connection is right. | This dot represents a junction which also implies the connection is right. | ||
| − | |- | + | |- |
| − | || | + | || Connect the positive end of the V1 power supply to the resistor. |
|| Connect the positive end of the V1 power supply to the resistor as shown. | || Connect the positive end of the V1 power supply to the resistor as shown. | ||
Create a wire connection between the '''Switch '''and V1 power supply as shown. | Create a wire connection between the '''Switch '''and V1 power supply as shown. | ||
| − | |- | + | |- |
| − | || | + | || '''Resistor Values.png - highlight the right bottom value''' |
| − | + | ||
| − | '''Resistor Values.png - highlight the right bottom value''' | + | |
| − | + | ||
|| Observe the yellow dots indicating the current flow direction in the circuit. | || Observe the yellow dots indicating the current flow direction in the circuit. | ||
| Line 189: | Line 189: | ||
You will see its characteristics at the bottom right of the screen. | You will see its characteristics at the bottom right of the screen. | ||
| − | Current flowing through the resistor denoted by I is 1.5 | + | Current flowing through the resistor is denoted by I and is 1.5 milliamperes. |
The voltage across the resistor denoted by Vd is 1.5 Volts. | The voltage across the resistor denoted by Vd is 1.5 Volts. | ||
| Line 198: | Line 198: | ||
Note the current readings in milliamperes (mA). Convert to amperes (A) and record the current accordingly. | Note the current readings in milliamperes (mA). Convert to amperes (A) and record the current accordingly. | ||
| − | |- | + | |- |
|| '''Slide:''' | || '''Slide:''' | ||
| Line 212: | Line 212: | ||
* To calculate the voltage, the formula becomes, | * To calculate the voltage, the formula becomes, | ||
| − | '''V = | + | '''V = I x R''' |
* To calculate the resistance, the formula becomes, | * To calculate the resistance, the formula becomes, | ||
'''R = V/I''' | '''R = V/I''' | ||
| − | |- | + | |- |
| − | || | + | || Only Narration |
|| This brings us to the end of the tutorial. Let us summarize. | || This brings us to the end of the tutorial. Let us summarize. | ||
| − | |- | + | |- |
|| '''Slide summary''' | || '''Slide summary''' | ||
|| In this tutorial, we learnt how | || In this tutorial, we learnt how | ||
| − | * | + | * Voltage, resistance, and current are related in a circuit. |
| − | * | + | * Ohm's Law helps to understand this relationship. |
| − | |- | + | |- |
|| Assignment 1 | || Assignment 1 | ||
|| As an assignment do the following | || As an assignment do the following | ||
| − | # | + | # In the same circuit, change the resistor value from 1K ohms to 10K Ohms. |
'''Tips:''' | '''Tips:''' | ||
To change the value of any component, select the component and right click and select edit option to change the values. | To change the value of any component, select the component and right click and select edit option to change the values. | ||
| − | |- | + | |- |
|| Assignment 2 | || Assignment 2 | ||
| − | + | '''Assignment 2 - Circuit.png''' | |
|| As an assignment | || As an assignment | ||
| − | # | + | # Do the circuit connection as shown in the image, that is use both A and B power supply in the circuit |
| − | # | + | # Keep the resistor value as 10K Ohms |
| − | # | + | # Calculate the current (in mA) flowing through the circuit. |
| − | |- | + | |- |
|| Slide :About Spoken Tutorial project | || Slide :About Spoken Tutorial project | ||
|| The video at the following link summarizes the Spoken Tutorial project. | || The video at the following link summarizes the Spoken Tutorial project. | ||
Please download and watch it. | Please download and watch it. | ||
| − | |- | + | |- |
| − | || Slide :Spoken Tutorial workshops | + | || Slide : |
| − | || The | + | |
| + | Spoken Tutorial workshops | ||
| + | || The Spoken Tutorial Project''' Team conducts workshops and gives certificates. | ||
For more details, please write to us. | For more details, please write to us. | ||
| − | |- | + | |- |
|| Slide : Forum for specific questions | || Slide : Forum for specific questions | ||
|| Please post your timed queries in this forum. | || Please post your timed queries in this forum. | ||
| − | |- | + | |- |
|| Acknowledgement | || Acknowledgement | ||
| − | || Spoken Tutorial project was established by the Ministry of Education(MoE), Govt of India | + | || Spoken Tutorial project was established by the Ministry of Education(MoE), Govt of India. |
| − | |- | + | |- |
|| Thank you | || Thank you | ||
|| This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay. | || This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay. | ||
Latest revision as of 17:59, 13 October 2023
| Visual Cue | Narration |
| Slide:1 | Welcome to the spoken tutorial on Ohm’s Law using circuitjs simulator. |
| Slide 2:
Learning Objectives |
In this tutorial, we will learn how
|
| Slide 3
System Requirement |
To record this tutorial, I am using:
|
| Slide 4:
Prerequisites |
To follow this tutorial, you should have a basic knowledge of
|
| Slide 5:
What is Ohm's Law? |
Ohm’s Law equation is V = I x R.
V is the voltage across the conductor measured in Volts. I is the current flowing through the conductor measured in Amperes. R is the resistance provided by the conductor measured in Ohms. |
| Show the diagram
Ohms’ law circuit Ohm’s Law Circuit.png |
To verify Ohm’s law we will use this circuit for demonstration.
For this experiment, we need
|
| Show the Circuit image. | We will learn how to create the same circuit in Circuitjs simulator and understand the concepts. |
| type ./circuitjs1 at the terminal prompt. | Let us open the circuitjs interface as shown. |
| Click on the Draw option
Browse through the menu |
In the menu bar, click on File and select New Blank Circuit.
Click on the Draw option in the menu bar. Now, select Add resistor. Click and drag to draw a resistor as shown. |
| Show the path to find the DC power supply and draw it
Draw => Inputs and Sources => Add Voltage Terminal. Right-click on the voltage source component >> select Swap Terminals. |
Now, let us add the DC power supply to the circuit.
Click on Draw, then go to Inputs and Sources, and select Add Voltage Source (2-terminal). Draw the voltage source above the resistor. Make sure that positive end of the voltage source is on the left side. In this case, we need to change the direction of the voltage source. Right-click on the voltage source component and select Swap Terminals. You will notice the polarity of the voltage source changes. We want a DC voltage source of 1.5 volts, but it is set to 5 volts by default. To change it, right-click the voltage source. Then select the edit option. A pop-up window will open. Delete the value 5 and type 1.5 and click the OK button to save the change. |
| Right-click on the DC voltage source >> select the Duplicate option. | We need three more of these same DC voltage sources connected one after another.
Right-click on the DC voltage source, and select the Duplicate option. Do this, two more times to make three copies of the DC voltage source. Move and link all four DC voltage sources together in a row as shown. Make sure that parts don't overlap when you connect them. Next let us label these voltage sources. Click on the Draw button, then go to Output and Labels and select Add Text. Move the cursor to the working space and click and drag. A default hello text will appear. Double click on the hello word to edit the text to V1 and click on the OK button. Repeat the same steps and label the other voltage sources as V2,V3 and V4. Arrange the label for a neat look. |
| Draw => Outputs and Labels => Ammeter | To measure the current in the circuit, we will use Ammeter.
Click on the Draw button, then go to Output and Labels and select Add Ammeter. Now, connect the ammeter to the resistor in the circuit. |
| Draw => Outputs and Labels => Voltmeter / Scope probe | Let us add a voltmeter across the resistor to see the amount of voltage passing through it.
Click on Draw and select Outputs and Labels. Then select Add Voltmeter/Scope probe. Place it below the resistor as shown. |
| Draw => Passive Components => Switch | We also need a Switch to turn ON and OFF the circuit.
In the Draw menu, select Passive components and Add switch. Drag and connect the switch next to the Ammeter. |
| Point to the components. | We have all the required components in the work area.
Now let's connect the components using wires. |
| Add Wire
Draw => Add wire |
From the Draw menu, select Add wire.
Connect the resistor and voltmeter as shown. You will notice a white dot at the end points of the connection. This dot represents a junction which also implies the connection is right. |
| Connect the positive end of the V1 power supply to the resistor. | Connect the positive end of the V1 power supply to the resistor as shown.
Create a wire connection between the Switch and V1 power supply as shown. |
| Resistor Values.png - highlight the right bottom value | Observe the yellow dots indicating the current flow direction in the circuit.
Observe the current reading across the Ammeter. Place the cursor on the resistor component. You will see its characteristics at the bottom right of the screen. Current flowing through the resistor is denoted by I and is 1.5 milliamperes. The voltage across the resistor denoted by Vd is 1.5 Volts. You can see the resistor value denoted by R is 1K Ohm. Make sure to write down the readings of each component in the circuit. Note the current readings in milliamperes (mA). Convert to amperes (A) and record the current accordingly. |
| Slide:
Ohm’s Law: Relationship I,V,R I = V / R V = I x R R = V / I |
Ohm's Law helps us find the third parameter when we know any two parameters:
I = V/R
V = I x R
R = V/I |
| Only Narration | This brings us to the end of the tutorial. Let us summarize. |
| Slide summary | In this tutorial, we learnt how
|
| Assignment 1 | As an assignment do the following
Tips: To change the value of any component, select the component and right click and select edit option to change the values. |
| Assignment 2
Assignment 2 - Circuit.png |
As an assignment
|
| Slide :About Spoken Tutorial project | The video at the following link summarizes the Spoken Tutorial project.
Please download and watch it. |
| Slide :
Spoken Tutorial workshops |
The Spoken Tutorial Project Team conducts workshops and gives certificates.
For more details, please write to us. |
| Slide : Forum for specific questions | Please post your timed queries in this forum. |
| Acknowledgement | Spoken Tutorial project was established by the Ministry of Education(MoE), Govt of India. |
| Thank you | This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay.
Thanks for watching. |
