IGCSE Physics Revision: Unit 4 Electricity & Magnetism | for Cambridge IGCSE 2023 Syllabus 

Electric charge 3:58 Electric field 5:43 Charging insulators by rubbing 8:11 Charging conductors by induction 9:26 The electric circuit 13:20 Circuit diagram 15:39 Voltage, current and resistance 16:21 Measuring voltage and current 22:53 Ohm's law 23:48 Resistance of wires 29:27 Calculating electric power 31:05 Kilowatt-Hour 34:35 Resistor types 38:29 Diode 42:00 IV Graph 46:57 Series connection 48:55 Parallel connection 52:45 Advantages of parallel circuit 57:32 Potential divider circuits 58:48 Mains electricity 1:05:01 Fuses 1:06:52 Circuit breaker/trip switch 1:09:50 Earth wire 1:13:08 Magnetism 1:14:30 Magnetic field 1:16:03 Magnetic field of conductors 1:19:23 Right hand grip rule - wire 1:20:42 Magnetic field of solenoid/coil 1:22:17 Right hand grip rule - coil 1:23:33 Relay 1:24:50 Speakers 1:25:54 Megnetizing and demagnetizing 1:27:08 Force on a current carrying conductor 1:35:06 Fleming left hand rule 1:36:53 DC motor 1:38:50 Electromagnetic induction 1:41:03 Lenz's law 1:43:32 AC generator 1:49:41 Transformer 1:52:09 Transmitting Electricity 1:56:25 Transformers - power 2:00:10

This great man did what a school tries relentlessly to do in 2 years, in literally half a days' worth of time.

Good luck to the first batch including myself that's doing space physics this year. Unarguably the batch with the most odds stacked up against them.

13:17 circuit 16:22 voltage, current, resistance 34:32 kilowatt hour 46:52 IV graphs 48:47 resistors in series 59:18 potential divider circuit 1:25:11 relay 1:38:45 dc motor 1:40:52 electromagnetic induction 1:43:51 lenz's law 1:47:36 angle at which current is cut effects 1:49:36 ac generator 1:52:15

I actually have started loving physics because of your videos. Thank u 🙏

All the best to this year's IGCSE candidates, including myself. Space physics is my only favourite chapter for the whole Physics syllabus. I am personally glad it is added to the syllabus (better than having barometers and manometers)

you should solve past paper questions too, that would be fun to watch!

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1:14:08 Magnetism

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I literally hated magnetism as I couldn’t understand it, but now it’s so easy and everything’s clear. Really love the way you teach 🥰🥰

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jazakallah khair Mr Mohammed thank you!

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Sir, you really are a life saviour !!! You just explained all at once in 2 hours which I've been struggling for two years... I'm so glad that I found you earlier before my final exams is getting close and you kinna make me love Physics now which I've been considering as my archenemy loll... Thankyou so much Sir! May God bless you Sir!

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Me watching this video the 4th time to finally understand everything once and for all!!

Thank you so much for making these videos man. It helped me and my friends a lot and made our final paper very easy. I appreciate it man. One small recomendation, you should start making videos on past papers too.

I am so glad you got recommended. Thanks for everything.

You're a lifesaver !

Thnanks a lot.. great recap and revision before finals

I literally wrote a mock today against next month exams and the last question you asked about why voltage is increased came out, and I just smiled thanking you so much in my heart. That was just one among the numerous other questions your videos helped me answer.

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Hello sir, I have been enjoying your teachings 😊 everything you have explained in a very simple terms and comprehensible. I would like to request if you could also have a video on college physics 😊 would be very grateful. Thank you

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you seriously helped my life in a series video that will make me pass IGCSE what teachers struggled to do in 6years

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Thank you, sir. This helped me a lot. Sir, may I know if you take any online classes

Thank You Very Much for you videos ❤

Sir ur an amazing teacher and im really struggling with A level phy can you also make videos them?

mr can you please do waves, they added a bunch of things about communications which i don't really understand. thanks a lot for this video, literally the only physics teacher i understand

sir you are great

Mo Ali, I can't thank you enough! I have been struggling with physics, especially space and general topics, because of bad teachers, but your explanations made everything so clear and easy to understand. You stick to the syllabus without all the extra content that just confuses me, unlike my textbook. Plus, your funny jokes make learning so much more fun,your videos never get boring!! I have my exams next month, and I am aiming for an A* in physics, and if I get it, it’s all thanks to you! LOVE YOU TEACHER! Please consider making videos for A Level physics as well, It's going to be really helpful for me in the future. ♥🥰

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I was so stessed bcz of my exams were in two weeks and my syllabus wasn’t completed and this lecture HELPED SO MUCHH

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The end peace was very satisfying😂 after making us use of so much brain bro said peace 😂. No joke bro literally taught better than schools.

Thanks for that highly interesting lecture!

Hello sir.Can you please tell explain how resistance and temperature are inversely proportional 40:06

Allah apko lambi aur kushi wai zindagi day

Sir you deserve much more 🙏

can you please please please have IB physics videos? i love your videos thank you!

Thank you so much 😊 you really helped me

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Mo, how do we change and measure current in a circuit

my final is in a month, thank you so much for this

thank you sir

Why does a Trasformer only work in ac current?

thank you sir. can you also please do a video on unit 3 : waves? it would be really helpful.

May god bless you youre a lifesaver!

really respect the content it was clear and direct appericiate it

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sir, can you do a paper 6 revision before our igcse physics exams

MashAllah sir, your english has improved drastically! Thank you for these amazing videos, super helpful

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can i get the ppt pls ty sm helped me so much

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It would be very helpful if u solve more past paper questions

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his personality makes studying so much more fun

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i couldn't understand the dc motor, and how the coil works, but after you explained the current carrying conducter and the left had rule everything just clicked in dc motor is so easy 😅

Why we use ac supply in transformers,as ac current demagnetize material?

Good explained topic my teachers also can't take his job.

Thank you so much sir!!!

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Thank you so much sir.

YOU GOT ME AN A Thank you

Waiting 🔜🔥🔥

Hey bro I just wanted to thank u for the good explaination I just got my results today and I got an a star Tysm

Tr why did u say the higher the temperature the higher the resistor and the lower current in 48:38 even tho u said if the temperature is increased the resistance will decrease in mentioning the thermistor