Good day sir. Pls, how can I measure or calculate the resistance per unit length of a constantan wire. You can also refer me to any experiment you have done. Thank you.
how to get resistance if i have a hollow copper tube length 5m and has external diameter10cm and its walls are thick 5mm the resistivity is 1.7×10power-8
Hello, first I must praise ... a brilliant lecture. Can I have an explanation, please? R = 2.65x10-8 x 10 / (pi) 3.14 (1.5x10-3) 2 = 3,75x10-2ohms in my calculation it comes out: R = 2.65x10-8 x 10/4.71x10-6 = 5.62x10-2ohms Where am I making a mistake? Thank You Kind Regards
This comment was really helpful but how do I do the maths that"s kinda like my problem the indices stuff( how do we divide the raise to power minus stuff)😊😅
I just looked it up on Google and it says 1.72...I am not sure where I got the 1.68 from, but of course that is not really the point of the problem. Sorry for the confusion.
What 10 do you mean, the 10^-3? That is because the wire diameter is given in mm, which must be converted to meters before it is put into the equation. A diameter of 3 mm is equal to 1.5 x 10^-3 meters. Does that help?
I have a whole playlist with a lot of circuit videos, here is the link to the first in the list ruclips.net/video/MUiHRqU4XBc/видео.html Thanks for watching and commenting
R = P×L÷A What 'P' stand for in the formula please? And where it's come from? I studied few days ago but I didn't understand it, please help to explain me.
Calculate the resistance of 915 meters length of a wire having a uniform cross-sectional area of 0.77 cm² if the wire is made of copper having a resistivity of 1.7 × 10^¯6 ohm cm.
I am not sure what your exact question is? I show you in the video how to calculate resistivity and resistance. Or if you want to know the resitivitiy of a material you can look it up in a book/Internet. Each material has its own resistivity. Does that help?
Show us the process of calculation too, don't skip it
Excellent! Busy on Sunday morning! Once again, the practical application is really helpful! Thanks again, great video!
You are ver welcome and thanks for commenting.
Great video tutorial ❤ thank you for sharing your knowledge and experience 🇵🇭🫡
My pleasure, thanks for taking the time to comment 😊
Thanks very much now am more than ready for the exam tomorrow ❤❤💪💪
Best of luck!
Thanks sooo much I finally understand it!! You're an amazing teacher!
You're welcome. I'm so glad to be helpful!
I don’t get it why do we have to use powers when converting mm to m for example y is 1mm squared when converted equal to 1x10 to the power -6
@@rohanwaseem3396 because the are 1000 mm in 1 m therefore there are 1000 x 1000 m2 in one m2. does that answer your question?
Perfect explanation ❤
Glad you think so, thanks so much!
Wow! Its very clear for me now. Thank you for this video.
Most welcome!
Thank you so much now I can solve
Good day sir. Pls, how can I measure or calculate the resistance per unit length of a constantan wire.
You can also refer me to any experiment you have done. Thank you.
how to get resistance if i have a hollow copper tube length 5m and has external diameter10cm and its walls are thick 5mm the resistivity is 1.7×10power-8
In my book, the resistivity of aluminum is 2.75x10^-8 ohms•m
Then go with what is in your book. That is probably what your teacher would want you to do.
@@stepbystepscience sometimes books are not correct, but more students confused what exactly to do in this situation.
It's very helpful for me, thanks for uploading these amazing videos
It's my pleasure, thanks for the comments
Why there's no step by step computation for R, my calculator didn't get the answer
Want more problems including circuit diagrams from this chapter....nice vid sir 😎
Here the link to another of my circuit videos. ruclips.net/video/MUiHRqU4XBc/видео.html
On example number 3 did reciprocate to get that P=R•A/L like how did you get there?
I do not think I did the reciprocal, I rearranged the equation to solve for the resistitivity (p).
Hello, first I must praise ... a brilliant lecture. Can I have an explanation, please?
R = 2.65x10-8 x 10 / (pi) 3.14 (1.5x10-3) 2 = 3,75x10-2ohms
in my calculation it comes out:
R = 2.65x10-8 x 10/4.71x10-6 = 5.62x10-2ohms
Where am I making a mistake?
Thank You
Kind Regards
I'm thinking that you'll have to multiply the wire to the amount you get from L/A
you didnt square r
Am trying to Puch too but it's not giving me the same answer he is demonstrating
This comment was really helpful but how do I do the maths that"s kinda like my problem the indices stuff( how do we divide the raise to power minus stuff)😊😅
Thank you sir for well explanation
You are most welcome.
Step by step science
How did you get the resistance? How did you calculate it?
Good Day Sir, Why the value of you copper resistivity is 1.68x10^-8? I thought its value was 1.72x10^-8 Ohm-m.
I just looked it up on Google and it says 1.72...I am not sure where I got the 1.68 from, but of course that is not really the point of the problem. Sorry for the confusion.
Dude ur explanation of the equation is legit but the problem comes when u place the final answers which does match up with what our calculators give
I mean doesn’t match ours
Its useful
Thanks !
You're welcome!
Thanks
Welcome!
Thank you very much 👍👍
You are very welcome
God will give you.
Thank you.
thanks man it really helped
Glad to hear it, you're very welcome.
Wow great
Thanks!
Thanks for the help man!
You are very welcome.
in problem number 3 where did u get the 10 from
What 10 do you mean, the 10^-3? That is because the wire diameter is given in mm, which must be converted to meters before it is put into the equation.
A diameter of 3 mm is equal to 1.5 x 10^-3 meters. Does that help?
Can you please upload more problems on complexed circuits? I follow you sir you explain very well !
I have a whole playlist with a lot of circuit videos, here is the link to the first in the list
ruclips.net/video/MUiHRqU4XBc/видео.html
Thanks for watching and commenting
Thank you sir 😀
Thank you again.
Thanx sir. I like it.✔️✔️
Thanks for liking it and commenting!
Eey that's awesome
Thanks so much!
Thank you so much
You're most welcome
@@stepbystepscience ☺️
R = P×L÷A
What 'P' stand for in the formula please?
And where it's come from?
I studied few days ago but I didn't understand it, please help to explain me.
That is the greek letter rho which in this equation is the resistivity. It is explained in this video:
ruclips.net/video/dRtNvUQC7c8/видео.html
@@stepbystepscience thank you so much.
Quick question
In my igcses will they provide me with the value of p (resistivity)
Yes they should.
@@stepbystepscience ok thank you
My motorcycle pick up coil has a resistance of 83 Omhs and a wire gauge size is 40 AWG . What will be the lenght of a wire? Please help.
40AWG is 0.00012 meters
you can use the formula to solve for length
Calculate the resistance of 915 meters length of a wire having a uniform cross-sectional area of 0.77 cm² if the wire is made of copper having a resistivity of 1.7 × 10^¯6 ohm cm.
Can you pls help me in solving this
i love myself☺
Thank u brother
You are very welcome
Am trying Puch on my calculator but the figure you are giving out is not working
What is Puch?
thanks man
Any time!
Please how did you get the answer
I do not understand, I showed you how to get the answer in the video.
L=pied2R/4p, to find length?
I have a question.. How do we calculate the maximum current that pass through a conductor without destroying it?
Yes I also wanna know this... Any please
thank you sir :D
Most welcome!
I don't get it 😢
How do u get resistivity?
I am not sure what your exact question is? I show you in the video how to calculate resistivity and resistance. Or if you want to know the resitivitiy of a material you can look it up in a book/Internet. Each material has its own resistivity. Does that help?
I thought resistance = rho x length / area?
Is that not what I said?
How do you put the resistance into your calculator? I dont understand the 10 -8 part
That is a ‘to the power’ button which is usually an X with a square to the right of it
@@stupot4278 thank you i got that figured out but for the answer im getting 1.1 and 10-5
How it becomes 105m?
Im not sure why im getting 10 to -5 for my answer, i divided 1.5 by 1000 to get. 0015
It becomes superconductor
Books name plz
What book?
just wanna ask for the length problem. if its on mm is the -3 constant ?
Yes
Sir last one answer r square pls check it sir
What is this nonsense
In case you could not figure it out, it is a video about Resistance and Resistivity.
Even after u said nonsense how he replied calmly who s nonsense now