Electric Current and Its Effects In One Shot - Class 7 Science Physics | BYJU'S - Class 7
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Hey Champs! Welcome to yet another episode of the BYJU’S Champions series. In this episode, we will be discussing Electric Current and Its Effects Class 7 Science (Physics) Concepts in detail.
Some of the topics covered by your favourite BYJU’S educator, Saurabh Sir, are as follows:
- Electric circuits
- Circuit diagram
- Heating
- Magnetic effects of electric current
Electric charge is defined as one of the fundamental physical properties of matter that allows it to experience a unique type of force when subjected to the influence of an electromagnetic field. There are two types of charges, positive and negative. Like charges repel each other while unlike charges attract each other. Join this class to learn more in detail about electric current and its effects.
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00:00 Electric Current and Its Effects In One Shot - Class 7 Science Physics
2:51 Which are the components inside a torch?
3:49 Electric Circuit
7:04 Q. Is there any easier way to represent these electric components?
7:55 Symbols of Electric Components
11:42 Circuit Diagram
12:43 Arrangement of Cells
14:36 Why doesn’t the bulb glow in this circuit?
17:12 Heating Effect of Electric Current
18:11 Applications of Heating Effect of Electric Current
19:27 Heating Element
20:47 Incandescent Bulb
22:45 Energy Saving Bulbs
25:27 Is it possible for a wire to melt and break?
29:35 Fuse: The Safety Device
31:56 Electric Fuse
34:33 Factors Affecting Heat Generated
36:42 Experiment Time
39:53 Magnetic effect of Electric current
41:35 Electromagnet
44:47 Applications of Electromagnets - Electric Bell
49:43 Separation Iron from Junk
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Same here, thanks sir
Love you sir ❤️ namaste 🙏
Same
Free....? It's not free lol or I think already 500 people have registered.....
Best sir
15:58 sir upper one is note glowing due to the incorrect arrangement of battery
9:12
21:22 not bad well tried Saurabh
50:08 I don't understand
1st question answer: current is the flow of charged particles (electrons) in wire.
2nd question answer : because the circuit is open and the electricity doesn't flow that's why the bulb is not glowing.
3rd question answer (oral): Depends on the device you are using .Just like when you use the heater the coil gets hot by conducting electricity and it feels hot ( because it has a heating element), but when you touch the bulb and you feel hot, it is because of the conduction of electricity and thus producing heat. And because of collision of charges with a atom when moving in a wire.
21:14 4th question (oral) : Incandescent bulbs are used old houses or for a decorstion for an occasion ,or for fancy lighting.
5th question: (imp) what is an incandescent bulb? : Incandescent bulb is a bulb which were used in houses in old time or are used in restaurants for fancy lighting,and are still being used old houses. it is made up of outer glass coating 2 filaments(supporters) and a tungsten rod in between. why tungsten? its is used because it has a very high melting point.
6th question answer: why we started using CFL and LED bulbs instead of using normal incandescent bulbs?: it is because filament bulb uses too much electricity much that 100 watts but does not give enough light and it produces heat so it is a waste of energy at tis point.We use CFL and LED bulbs because not only they are energy efficient but produces more light than incandescent bulb such at 8 watts 9 watts 10 watts . ( fun fact they do not even produce that much heat).
7th question answer : it is possible but in couple scenarios but in general no. But in general ther is a fuse wire which limits the electricity flown to the tungsten wire and thus does not make it melt or break.
there are many questions but answering this much only because my hands are hurting like hell. But i hope this helps you. ;)
😲
it really helped
.
.
.
why are u reading tis go study
ok now u have to leave
studyyyy
.
@@user-ks2dm4ex5h copy
from wiki
For your kindly information, the answer which you have given to the 2nd question is wrong, actually the current only flows when the cells are joined in series and when the negative terminal of one cell kept in contact with the positive terminal of other, but in that figure, the negative terminal of one cell kept in contact with the negative terminal of other cell, that's why the current will not flow through it and the circuit breaks. Therefore, the bulb will not glow.
😂😂😂your notes are phaltoo😅
thank you so much during exams I just see wh
ole video and give my exam and I get a full explanation.
The video was really helpful for my exam preparation. Thank you so much for your assistance once again!
Legends will be watching one day before there exam…..😂😂
Thank u sir
Ha mera bhi kal exam hai
Sir when you gave both the circuits of a torc and said that first circuit, s switich is open there see the terminals if the circuit and of a torch
The flow of electricity through a conductor such as metal wire is know as electric current
32:31 but hum to abhi bhi fuses karte hai aur sir Maine gajab answer diye to ek bar scroll kar ke dekh lena.
The video was really helpful for my exam preparation. However, as I come from Tamil Nadu and my Hindi is not strong, it was quite difficult for me to comprehend. Therefore, I kindly request you to speak in English in your future videos so that students from all over India can understand it easily. Thank you so much for your assistance once again!
Hindi seekh lo. English seekhne ka time mil gya but hindi seekhi nhi😂😂
I second that, but Hindi is the national language of our country and everyone whether from north or south should know it well...
@@kavitawithshobhachavan447 there is no national language of india as per our constitution
@@kingsingh9566 In our country to get job we should be speaking english the other languages are not that important so all over india everyone knows english and we are full of diversity and different languages
@@kavitawithshobhachavan447 india doesnt have a national language...that is one of the things we are famous for our different and diverse languages.
In the vid the teacher said st wrong at the time 15:47
The bulb doesn't glow coz of the wrong arrangement of cells, and not because the circuit was closed --- according to sir. It clearly shows the closed switch over there. Otherwise the vid was good.
Yaa
What a english i can't understand a word
I love his vids they are so clear and initiative and fun I understand everything so nicely. And I'm really bad at science😅😊❤
very nice video makes me understand everything
thank you byjus
Sir this will help for scert syllabus or not?
Byjus is the good plat form of study. Thanks byjus.
Bulb, switch, wire, battery, celll, voltmeter and resistance
14:50 Sir, the bulb doesn't glow in the first figure as the cells were from the negative terminals of both the cells.
Hi sir, you are an incredible teacher! Thank you for helping us. Anyway, the answer that you explained on 16:10 is wrong.. the answer should be that the negative terminals are connected to each other which is why the bulb isn’t glowing…. Please take into consideration… thank uou
Everthing you taught was great Sir! But, in 14:36, the circuit didn't work because the arrangement of the cells were wrong like + - - +, but it should come + - + -. Both the circuits were also closed. But other than that, everything was very clear!
yeah even i thought of that
Sir was just going with the flow and forgot the concept of the arrangement of cells🤭
No actually sir is right, they have asked there that why doesn’t the bulb go low in this circuit , that’s why they given that diagram where - and - are connected together , if u don’t understand see the video once again 😊
@@tanvigowda318 That is exactly the point, but Saurabh Sir didn't see that. Instead, he told that the reason the circuit didn't work was that it was open.
@@abrahammathew3752 oh ok I didn’t notice that, most of the time he was talking in Hindi so I couldn’t understand properly, Thank u for letting me know it😃
sir,
at 14:36 the cells are at "positive to negative to negative to positive"(+ - - +) instead of the real one
sir made it so easy to grasp and learn and helped me a lot for my final exams
37:10 compass
Current is a flow of electrons fron high pressure to low pressure
39:11 because of the magnetic effects of current the compass deflects
s minus jodenge to plus mein jodenge To
sir current is a controlable and convential energy which is used for our daily uses
16:04 sir arrangements of cells are correct thats why bulb didn't glow in that circuittt
The flow of electron in unit time through a wire is called electric circuit
5:14 sir in this diagram i have problem because in my book and in goggle diagram are different totally
Bulb, conducting wires, switch, battery or cell
Sir in circuit diagram the battery was connect --
Sir sometimes the cells are placed side by side. Then how are the terminals of the cell connected?
Cell holder
Thank you sir tommorrow is my exam of science , this helps me so much ✨🙏
Same
Legend is watching video one day before 😂😅😊
Me also
in the torch you didn't mention that the batteries were not connected properly both the negative terminals were connected facing each other
🎉
5:15 flow of electicity is known as current
Sir is not show the cell or bettre
39:12 because it is electro magnet 🧲🧲
Thanks sir tomorrow is my exam and this is good platform for study
SAME
Same
Amazing teaching Sir
Sir torch diagram mein cell are not correctly joined that's why it not glowing. But you think that it should be an open circuit . I think sir you by mistake forgot that , or I am saying wrong only ??
u correct i notice that too
Sir you are my favourite teacher.🙏🙏❤️❤️👌👌🙂☺️😃😄😀😃😄
Best physics teacher ❤
Thanku @eeshanspy-vs7fd
Sir , you are best teacher
☺️
But sir how does the filament get heated that quick right after we turn the switch on?
by the way thnx for the teaching my exams are in 9 day annual
Because filament is made of Tungsten and tungsten has high resistance
Sir per Jo aapane Ek question dikhaya tha jismein Ek circuit ka diagram tha aur torch Bani hui thi UN donon hi diagrams mein circuit close tha aur Agar Dhyan Se Dekha Jaaye to cell sahi se place Nahin the per aapane kaha ki circuit Sahi Nahin Hai To ismein Mujhe confusion hai
🙏Thanks.sir 🙏you are giving
Very good knowledge 🙏😍❤🙏
JAI RAJPUTANA
The continuous flow of electron in a electric circuit is known as electric current.
A flow of charge through a conductor
Sar aap bahut bahut Achcha physics Pada is like with mis u
it would ve helped soo much if he only used english insted of hindi
Sir i got 80/80 in exam thanku so much sir....
14:50 ye aap sir galat bole ye switch close hoga open nahi hoga ye bulb glow isliye nahi kar raha h kyuk8 iska cell galat laga h negative negative k saath 🤔🤔
48:23 SIR PLEASE MAKE AN EXPERIMENT VIDEO ON IT .... PLEASE
at 15:00 i realized that it eas a problem with battery arrangement
Exams are near.
Nothing is clear.
No need to fear.
When Byju's learning is here.
😂😂
Lol what a poetry
this is dear sir dialouge
Bhat tho Shahi hai
Kya bata hai .sayari master 😊😊😊
3:40 bulb , switch , cells (electric cell) 4:30
really nice explenation hats off
Current is a type of electron which flow in the molecules of wires and the heat is
3:49
Best of the best video which I can understand very much perfect
Thanks sir .. i have understood every topic now ❤️
Current : it deals with the study of electric charge in motion is called current .
Sir I have understood parlel but what is series can you explain me sir
Such a helping video
Yes because in fuse if there is excessive flow of current fuse wire melts and breaks
Bulb, switch, glass and wires
Sir, Your teaching really helped me to understand this chapter.
You are the best Sir.
a bulb has aa bulb,reflector,battery,slide switch,and some connecting wires as we studied in class 6
Sir nowadays you are speaking more in Hindi
And it's getting harder for other language students to understand
Thank you sir for teaching so well😊
Thank you so much BYJUS for sharing this video with us 😊
question ka answer ek question ka answer ek question answers witch
witch ???
Tungsten
It is present in nutrients like vitamin etc...
16:03, sir you actually made a mistake, the batteries pattern isn't correct so current didn't flow and both diagrams have the switch closed
The flow of chareges is known as current
Its a form of energy
and also it has concave lense
31:02
53:24
Battery 🔋, light and positive and negative terminal
Sir I have filament bulb at home.
Sir ek torch ke aandar 2 battary ek bulb
Why people buy byju's courses when they can learn this nicely 😂 🤨
When the charge flow it is callled current
SIR 2ND THAT QUESTION OF TORCH THERE WAS MISTAKE OF ARRANGMENT OF BATTERY
Sir what is heating effect of electric current
45:50 the way he said it
Bulb , cells ,switch
Flow of electrons
electromagnetism
is what oearsted found
14:54 sir the upper one is not glowing due to the incorrect arrangement of battery
It's fuse sir which work on heating effect
19:15 Resistance ke bare me bhi bta dejiye
sir thankyou so much and love you GURUJI
Thanks you it was a very good class
Sir ke takle ki shine to dekho 😂😂
Many types of torch
Sir your video is very nice
Torch mee.. Bulb, switch, copper wire, cells hota hai
Components of torch 🔦 bulb battery 🔋 switch
Plz tell how we can find the notes they r not on Telegram