Hi... thanks for watching my video👍 Well, I can do for 21 and 23, but most of the questions are quite similar... but I'll consider it.😉 But to be honest, I'm kinda busy recently... so, I'll probably post it around next two weeks.. So, pls subscribe and turn the notif on, so you won't miss it.
I’m so sorry but I didn’t really understand question 34 :( For the loop to rotate clockwise, the force on the left side should be upwards and the one on the right side should be down. Using the right hand rule, I,B,F, yields a magnetic field from right to left, hence Y is north and X is south. isn’t the answer supposed to be choice C? and not choice B
Hi... yes, you're right, the force on the left side should be upwards. Ok, let's focus on the left one then. The force F is upwards (thumb should be upwards), then the current, I, is away from us (third finger or middle finger should point away from us), therefore our fore finger or index finger (B, magnetic field) will be pointing from left to right, so answer is B. Let's try to do it again... make sure you're using your right hand :) Oh, btw, don't follow the picture I gave as the example.... because in that picture the current is coming towards us, not away from us.... I couldn't find a picture where the current is flowing away from us 🙏 Hope it helps 😊
Hi... sorry for my late reply. The first thing to do is, check the question, see if it mentions anything about generating electricity. If it does, then use the right hand. If the question gives any kind of electric power supply (battery, moving charge, etc), use left hand. So, in short, if it is motor (eletricity to motion) use left hand, if it is generator (motion to electricity) use right hand.
Ah, I thought you asked about no 34. My bad. For Q39, we don't use Fleming's rule. This question is only showing that a charged particle enters an electric field. So, we simply use the law of electric charges: like charges repel and opposite charges attract. That's all. We use Fleming's rule whenever there's current (or moving charge), magnetic field and force. Q39 doesn't have magnetic field. Only moving charge and electric force.
Hi.. sorry for my late reply. Yes, both A and C have the correct direction. But the distance between the lines represents the strength of the magnetic field. In this question, the magnetic field is getting weaker as it gets further from the wire (shown by the gradually increased distance between lines in C). As for A, the lines have equal separations which means that the magnetic field is uniform (which is not). That's why A is not the answer. Hope it helps :) Btw, good question! I missed to mention it in my explanation. Thanks!
Its a very good explanation. Thanks. Waiting for more videos
Thanks! I'm working on more videos right now. Don't forget to set the notification :)
Your explanations are great. It would be really helpful if you could do for 21 and 23 variants of October November 2020 :)
Hi... thanks for watching my video👍 Well, I can do for 21 and 23, but most of the questions are quite similar... but I'll consider it.😉 But to be honest, I'm kinda busy recently... so, I'll probably post it around next two weeks.. So, pls subscribe and turn the notif on, so you won't miss it.
Good explanation
Thanks! 😊
I’m so sorry but I didn’t really understand question 34 :( For the loop to rotate clockwise, the force on the left side should be upwards and the one on the right side should be down.
Using the right hand rule, I,B,F, yields a magnetic field from right to left, hence Y is north and X is south. isn’t the answer supposed to be choice C? and not choice B
Hi... yes, you're right, the force on the left side should be upwards. Ok, let's focus on the left one then. The force F is upwards (thumb should be upwards), then the current, I, is away from us (third finger or middle finger should point away from us), therefore our fore finger or index finger (B, magnetic field) will be pointing from left to right, so answer is B.
Let's try to do it again... make sure you're using your right hand :)
Oh, btw, don't follow the picture I gave as the example.... because in that picture the current is coming towards us, not away from us.... I couldn't find a picture where the current is flowing away from us 🙏
Hope it helps 😊
Hey so can you let me know when do we have to us the Fleming's left hand rule in questions like Q.39?
Hi... sorry for my late reply. The first thing to do is, check the question, see if it mentions anything about generating electricity. If it does, then use the right hand. If the question gives any kind of electric power supply (battery, moving charge, etc), use left hand. So, in short, if it is motor (eletricity to motion) use left hand, if it is generator (motion to electricity) use right hand.
Ah, I thought you asked about no 34. My bad. For Q39, we don't use Fleming's rule. This question is only showing that a charged particle enters an electric field. So, we simply use the law of electric charges: like charges repel and opposite charges attract. That's all.
We use Fleming's rule whenever there's current (or moving charge), magnetic field and force.
Q39 doesn't have magnetic field. Only moving charge and electric force.
@@C-Course Alright, got it! thank you!
using the right hand rule for question 29, why isn't it A?
Hi.. sorry for my late reply. Yes, both A and C have the correct direction. But the distance between the lines represents the strength of the magnetic field. In this question, the magnetic field is getting weaker as it gets further from the wire (shown by the gradually increased distance between lines in C). As for A, the lines have equal separations which means that the magnetic field is uniform (which is not). That's why A is not the answer. Hope it helps :)
Btw, good question! I missed to mention it in my explanation. Thanks!
@@C-Course thanks!!
Hi can i get so 2016 to 2018 summer papers (October November)
Hi... thanks for watching my videos... I'm currently working on the May June 2021 papers. Maybe I'll do the 2016-2018 papers afterwards
@@C-Course Okay
Thank you!
My pleasure 😁
Thank you
My pleasure 😊
Thx