Difference between revisions of "PhET-Simulations-for-Chemistry/C2/Conductivity/English"
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'''Summary''' | '''Summary''' | ||
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− | || '''Slide Number | + | || '''Slide Number 7''' |
'''Assignment''' | '''Assignment''' | ||
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− | | | + | || '''Slide Number 8''' |
'''About Spoken Tutorial Project ''' | '''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. | ||
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− | | | + | || '''Slide Number 9''' |
'''Spoken tutorial workshops ''' | '''Spoken tutorial workshops ''' | ||
− | | | We conduct workshops using spoken tutorials and give certificates. | + | || We conduct workshops using spoken tutorials and give certificates. |
For more details, please contact us. | For more details, please contact us. | ||
|- | |- | ||
− | | | + | || '''Slide Number 10''' |
'''Answers for THIS Spoken Tutorial ''' | '''Answers for THIS Spoken Tutorial ''' | ||
− | | | Please post your timed queries in this forum. | + | || Please post your timed queries in this forum. |
|- | |- | ||
− | | | + | || '''Slide Number 11''' |
'''Acknowledgement ''' | '''Acknowledgement ''' | ||
− | | | Spoken Tutorial project is funded by the Ministry of Education (MoE), Govt. of India | + | || Spoken Tutorial project is funded by the Ministry of Education (MoE), Govt. of India |
|- | |- | ||
− | | | + | || |
− | | | This is Vidhi Thakur, a FOSSEE summer fellow 2022, IIT Bombay signing off. | + | || This is Vidhi Thakur, a FOSSEE summer fellow 2022, IIT Bombay signing off. |
Thank you for joining. | Thank you for joining. |
Revision as of 09:02, 17 December 2022
Conductivity
Author: Vidhi Thakur
Keywords: PhET simulation, Conductivity, battery, metals, plastic, photoconductor, valence band, conduction band, band gap, spoken tutorial, video tutorial.
Visual Cue | Narration |
Slide Number 1
Title Slide |
Welcome to this spoken tutorial on Conductivity. |
Slide Number 2
Learning Objectives |
In this tutorial, we will learn how,
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Slide Number 3
System Requirement |
Here I am using
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Slide Number 4
Pre-requisites |
To follow this tutorial, learner should be familiar with topics in High School Science.
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Slide Number 5
Link for PhET simulation Point to https://phet.colorado.edu/en/simulations/conductivity/about |
Please use the given link to download the PhET simulation. |
Point to the file in the Downloads folder. | I have downloaded the Conductivity simulation to my Downloads folder. |
Double click the file to open | To open the simulation, double-click on the file. |
Cursor on the interface. | This is the interface of Conductivity simulation. |
Cursor on main panel.
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The main panel consists of a circuit.
The circuit has a battery with a box to input the voltage.
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Cursor on left panel.
Point to the two bands.
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The expanded rectangle is divided into two bands.
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Point to the lower band. | We can see that by default all electrons are in the low energy state. |
Cursor on Materials panel on the right.
Point one by one.
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On the right panel we can see the Materials section.
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Cursor on torch. | At the bottom, we have a torch to shine light. |
Click on up arrow on battery voltage box till 0.2 volts.
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Let us leave the default selection of material as Metal.
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Point to the circuit. | Observe the movement of electrons in the circuit.
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Point to the valence band in the left panel. | Observe the movement of electrons in the valence band. |
Click on the Pause button. | Let us now pause the simulation. |
Point to the circuit. |
This simulation helps to understand the concept of conductivity.
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Click the Play button at the bottom. | Now click the Play button. |
Only narration | The electrons start moving, as we increase the voltage. |
Click the up arrow button of Battery Voltage to 2 V. | Let's increase the voltage to 2 volts and observe. |
Point to the circuit.
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As voltage increases the potential difference between the terminals increases.
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Only narration. | This makes metals good conductors of electricity. |
Click on the Plastic radio button.
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Let us change the material to Plastic.
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Point to the circuit and to Voltage box: 2 V. | We do not see the movement of electrons, even at high voltage. |
Click the Shine The Light checkbox.
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Now let us click the Shine The Light checkbox.
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Cursor on left panel >> band gap.
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The band gap for plastic is very high.
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Uncheck the Shine The Light check box. | Let us uncheck the Shine The Light check box. |
Click on the Photoconductor radio button. | Let us change the material to Photoconductor. |
Point to Voltage box: 2 V. | Even at high voltage no movement of electrons is seen. |
Click the Shine The Light check box.
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Let us shine the light now.
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Point to the electrons in the energy bands in the left panel. | Observe that some electrons excite to the higher energy band. |
Cursor on Left panel. | Band gap for a photoconductor is less than plastic and more than metal.
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Only narration | This intermediate material is a semiconductor with a small band gap.
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With this we come to the end of this tutorial.
Let's summarise. | |
Slide Number 6
Summary |
In this tutorial we have learnt how,
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Slide Number 7
Assignment |
Here is an assignment for you.
Check if,
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Slide Number 8
About Spoken Tutorial Project |
The video at the following link summarizes the Spoken Tutorial project.
|
Slide Number 9
Spoken tutorial workshops |
We conduct workshops using spoken tutorials and give certificates.
|
Slide Number 10
Answers for THIS Spoken Tutorial |
Please post your timed queries in this forum. |
Slide Number 11
Acknowledgement |
Spoken Tutorial project is funded by the Ministry of Education (MoE), Govt. of India |
This is Vidhi Thakur, a FOSSEE summer fellow 2022, IIT Bombay signing off.
Thank you for joining. |