Nancyvarkey at 11:57, 18 September 2015

2015-09-18T11:57:17Z

Madhurig: Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Electro-magnetism'''. |- || ''..."

2015-09-03T16:04:47Z

Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Electro-magnetism'''. |- || ''..."

New page

{| border=1
||'''Visual Cue'''
||'''Narration'''
|-
|| '''Slide Number 1'''

'''Title Slide'''
|| Hello everyone. Welcome to this tutorial on '''Electro-magnetism'''.
|-
|| '''Slide Number 2'''

'''Learning Objectives'''

* Electro-magnetic induction

* Mutual induction of coils

* Voltage induced by a rotating magnet

* Resonance of driven pendulum.

* Show circuit diagrams
|| In this tutorial we will demonstrate:

* Electro-magnetic induction

* Mutual induction of coils

* Voltage induced by a rotating magnet

* Resonance of driven pendulum.

And Show circuit diagrams for our experiments.
|-
|| '''Slide Number 3'''

'''System Requirement'''

* '''ExpEYES''' v 3.1.0

* '''Ubuntu Linux''' OS v. 14.10
|| Here I am using,

* '''ExpEYES''' version 3.1.0

* '''Ubuntu Linux''' OS version 14.10
|-
||'''Slide Number 4'''

'''Pre-requisties'''

You should be familiar with:

'''ExpEYES''' interface.

For relevant tutorials, visit our website.

'''www.spoken-tutorial.org'''.
|| To follow this tutorial, you should be familiar with:

'''ExpEYES Junior''' interface.

If not, for relevant tutorials, please visit our website.
|-
|| '''Slide Number 5'''

'''Electromagnetic Induction'''

Demonstration of '''Electromagnetic Induction'''.
|| Let's begin with demonstration of '''Electro-magnetic Induction'''.
|-
|| Show the picture and circuit diagram.
|| In this experiment, wires of 3000 turns coil are connected to '''ground(GND)''' and ''' A1'''.

To show the magnetic effect, a magnet with ''5mm'' diameter and ''10mm'' length is used.

This is the circuit diagram.
|-
||
|| Let's see the result on the '''Plot window'''.
|-
|| Point to the horizontal trace.
|| A horizontal trace appears on the '''Plot window'''.
|-
|| Point to the rolled paper.
|| Roll a paper and insert it inside the coil.
|-
|| Show the activity.
|| Drop the magnet inside the rolled paper and move it up and down.

Repeat the process until the '''induced voltage''' is captured and displayed.
|-
|| Click on '''Experiments''' button.
|| On the '''Plot window''' click on '''Experiments''' button.
|-
|| Point to '''Select Experiment''' list.

Click on '''EM Induction'''.
|| '''Select Experiment''' list appears.

Click on '''EM Induction'''.
|-
|| Point to the windows.

Point to the circuit diagram on the '''Schematic''' window.
|| Two new windows,

'''Electromagnetic Induction''' and '''Schematic''' appear.

'''Schematic''' window shows the circuit diagram.
|-
|| Click on '''Start Scanning''' button.

Point to the trace.
|| On the '''Electromagnetic Induction''' window, click on '''Start Scanning''' button.

Horizontal trace changes to a wave.

It happens when the '''periodic scanning''' of the voltage coincides with the movement of the magnet.

This indicates voltage is '''induced''' in the coil by a moving magnet.
|-
|| '''Slide Number 6'''

'''Mutual Induction'''

Demonstrate '''mutual induction''' of two coils.
|| Next I will demonstrate '''mutual induction''' of two coils.
|-
|| Point to the pictutre and circuit diagram.
|| In this experiment '''A2''' is connected to '''SINE'''.

'''SINE''' is connected to '''ground'''('''GND''') through a coil.

And ''' A1''' is connected to '''ground(GND)''' through a coil.

This is the circuit diagram.
|-
||
|| Let's see the result on the '''Plot window'''.
|-
|| Click on '''A1''' and drag to '''CH1'''.
|| Click on '''A1''' and drag to '''CH1'''.

'''A1 '''is assigned to '''CH1'''.
|-
|| Click on''' A2 '''and drag to '''CH2.'''.
|| Click on '''A2''' and drag to '''CH2'''.

'''A2''' is assigned to '''CH2'''.
|-
|| Move the '''msec/div''' slider.
|| Move the '''msec/div''' slider to view '''applied waveform''' and '''induced waveform'''.
|-
|| Show the picture.
|| A changing magnetic field causes '''induced voltage'''.

You may not see any '''induced voltage''' on the secondary coil.

Keep the coils close to each other along the axis.

Insert some '''ferromagnetic''' material along the axis.

We have inserted a screw driver to '''induce voltage''' on the secondary coil.

|-
|| Click and drag '''CH1''' to '''FIT'''.

Click and drag '''CH2''' to '''FIT'''.

Point to the voltage and frequency of''' A1''' and '''A2'''.
|| Click and drag '''CH1 ''' to ''' FIT'''.
Click and drag '''CH2''' to '''FIT'''.

Voltage and frequency of '''A1''' and '''A2''' is seen on the right.

Difference in the voltages of '''A1''' and '''A2''' is due to the '''induced voltage''' on the secondary coil.
|-
|| '''Slide Number 7'''

'''Induced Voltage'''

Demonstrate voltage '''induced''' by a rotating magnet using a '''DC motor''' and coils.
|| Next we will demonstrate '''voltage induced''' by a rotating magnet using '''DC motor''' and coils.
|-
|| Point to the picture and the circuit diagram.
|| In this experiment,

'''A1''' is connected to '''ground(GND)''' through a coil.

'''SQR2''' is connected to '''ground(GND)''' through a '''DC motor'''.

A permanent magent of ''10mm'' diameter and ''10mm'' length is mounted on '''DC motor'''.

'''A2''' is connected to '''ground(GND)''' through a coil.

This is the circuit diagram.
|-
||
|| Let's see the result on the '''Plot window'''.
|-
|| Point to '''Setting Squarewaves'''.
|| Under '''Setting Squarewaves''', set the frequency value to '''100Hz'''.

Click on '''SQR2''' checkbox.
|-
|| Click on '''A1''' and drag to '''CH1'''.

Point to the value.
|| Click on '''A1''' and drag to '''CH1'''.

'''A1''' is assigned to '''CH1'''.
|-
|| Click on '''A2''' and drag to '''CH2'''.

Point to the value.
|| Click on '''A2''' and drag to '''CH2'''.

'''A2''' is assigned to '''CH2'''.

|-
|| Move the '''msec/div''' slider.
|| Move the '''msec/div''' slider to obtain the wave form.
|-
|| Move the '''volt/div''' slider.
|| Move the''' volt/div''' slider to adjust the wave form.
|-
|| Click on '''CH1''' and drag to '''FIT'''.

Click on '''CH2''' and drag to '''FIT'''.
|| Click on '''CH1''' and drag to '''FIT'''.

Click on '''CH2''' and drag to '''FIT'''.
|-
|| Point to the voltage and frequency values on the right.
|| On the right side you can see voltage and frequency.

Please note, voltage and frequency values of the two alternating wave forms are almost the same.

This is because, as the magnet rotates, magnetic field around the coil constantly changes between the poles.

Rotation of the magnet results in alternating '''induced emf''' in the coil.
|-
||
|| Next let's experiment with driven pendulum.
|-
|| '''Slide Number 8'''

'''Driven Pendulum'''

If a pendulum oscillates with an induced magnetic field it is called a driven pendulum
|| If a pendulum oscillates with an '''induced magnetic field''' it is called a '''driven pendulum'''
|-
||
|| In this experiment, '''SQR1''' is connected to Ground('''GND''') using a coil.

Button magnets are suspended infornt of the coil with a paper strip as a Pendulum.

This is the circuit diagram.
|-
||
|| Let's see the result on the '''Plot window'''.
|-
|| click on '''SQR1''' check box.
||click on '''SQR1''' check box.
|-
|| Click on '''Experiments''' button.

Point the list.

Select''' Driven Pendulum'''.
|| Click on '''Experiments''' button.

'''Select Experiment''' list appears.

Select ''' Driven Pendulum'''.
|-
|| Point to the windows.
|| Two windows appear:

'''Schematic of Driven Pendulum''' and

'''EYES Junior: Driven Pendulum'''.

|-
|| Drag the slider.

Point to the values.
|| On the '''EYES Junior: Driven Pendulum''' window, drag the slider.

As we drag the slider, the pendulum oscillates.

Between "2.6 Hz" to "2.9Hz" pendulum oscillates with a maximum '''amplitude'''.

This is because its '''resonant frequency''' is same as its '''natural frequency'''.
|-
||
|| Let's summarize.
|-
|| '''Slide Number 8'''

'''Summary'''

We have learnt to demonstrate:

* Electromagnetic induction

* Mutual induction of coils

* Voltage induced by a rotating magnet

* Resonance of driven pendulum

Show circuit diagrams for our experiments
|| In this tutorials we have learnt to demonstrate:

* Electromagnetic induction

* Mutual induction of coils

* Voltage induced by a rotating magnet

* Resonance of driven pendulum

And Show circuit diagrams for our experiments.
|-
|| '''Slide Number 9'''

'''Assignment'''

Demonstrate

* How to make an electromagnet.

* Mutual induction of a single coil with a magnet.

* Show circuit diagrams for the experiments.
|| As an assignment, demonstrate

* How to make an electromagnet.

* Mutual induction of a single coil with a magnet.

* Show circuit diagrams for the experiments.
|-
|| '''Slide Number 10'''

'''Acknowledgement '''

Watch the video available at

http://spoken-tutorial.org/What is a Spoken Tutorial

It summarises the Spoken Tutorial project.

If you do not have good bandwidth, you can download and watch it.
||
* This video summarises the Spoken Tutorial project

* If you do not have good bandwidth, you can download and watch it.
|-
|| '''Slide Number 11'''

The Spoken Tutorial Project Team

Conducts workshops using spoken tutorials

Gives certificates to those who pass an online test

For more details, please write to

'''contact@spoken-tutorial.org'''
||
* We conduct workshops using Spoken Tutorials and give certificates.

* Please contact us.
|-
|| '''Slide number 12'''

Spoken Tutorial Project is a part of the Talk to a Teacher project

It is supported by the National Mission on Education through ICT,

MHRD, Government of India

More information on this Mission is available at

'''http://spoken-tutorial.org/NMEICT-Intro'''.
|| The Spoken Tutorial Project is funded by '''NMEICT, MHRD''' '''Government of India'''.
|-
||
|| This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi.

Thank you for joining.
|}

@@ Line 6: / Line 6: @@
 '''Title Slide'''
-|| Hello everyone. Welcome to this tutorial on '''Electro-magnetism'''.
+|| Hello everyone. Welcome to this tutorial on '''Electro-magnetic induction'''.
 |-
 || '''Slide Number 2'''
@@ Line 31: / Line 31: @@
 * Resonance of driven pendulum.
-And Show circuit diagrams for our experiments.
+* And show circuit diagrams for our experiments.
 |-
 || '''Slide Number 3'''
@@ Line 57: / Line 57: @@
 '''www.spoken-tutorial.org'''.
-|| To follow this tutorial, you should be familiar with:
+|| To follow this tutorial, you should be familiar with '''ExpEYES Junior''' interface.
 If not, for relevant tutorials, please visit our website.
@@ Line 72: / Line 71: @@
 || Show the picture and circuit diagram.
 || In this experiment, wires of 3000 turns coil are connected to '''ground(GND)''' and ''' A1'''.
 To show the magnetic effect, a magnet with ''5mm'' diameter and ''10mm'' length is used.
 This is the circuit diagram.
@@ Line 114: / Line 115: @@
 Point to the trace.
 || On the '''Electromagnetic Induction''' window, click on '''Start Scanning''' button.
 Horizontal trace changes to a wave.
 It happens when the '''periodic scanning''' of the voltage coincides with the movement of the magnet.
 This indicates voltage is '''induced''' in the coil by a moving magnet.
@@ Line 256: / Line 260: @@
 || In this experiment, '''SQR1''' is connected to Ground('''GND''') using a coil.
-Button magnets are suspended infornt of the coil with a paper strip as a Pendulum.
+Button magnets are suspended in front of the coil with a paper strip as a Pendulum.
 This is the circuit diagram.

ExpEYES/C2/Electro-Magnetism/English - Revision history

Nancyvarkey at 11:57, 18 September 2015

Madhurig: Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- || '''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Electro-magnetism'''. |- || ''..."