Magnetic Field || Important Questions Solution || Numericals || Class 12 Physics || NEB -Gurubaa

[@shreyashsharma7999]

4:58 magnetic field 1.25 cha calculation ma 0.25 leko cha

[@ReviewsNepal]

An electron of K.E. 10 eV is If a cute angles to a uniform magnetic field. Determine the value of the moving in a circular orbit of radius 11 cm, in a plane at right flux density. (mass of an electrón= 9,1x10-31 kg, e-1.6×10-19

[@DiiloKaShooter]

Given , K.E = 10eV = 10 x1.6 x 10^-19 = 1.6x10^-18 J
radius , r =11cm = 11x10^-2m
mass of electron = 9.1x10^-31
e = 1.6x10^-19 C
B = ?
we know ,
K.E = 1/2 mv^2
v = root under 2KE over m --> simplify
v = 1.875 x 10^6 m/s
Since the elctron is in circular motion centripetal force acting on it ,
F = mv^2 / r
Also the force on electron due to magnetic field is
F = Bev
As electron moves in circular orbit the force on electron due to magnetic field provides necessary centripetal force i.e
Bev = mv^2 / r ----> simplify B = 9.69x10^-4 T
I hope you will find it useful.
From someone giving 12th exam this year. Wish me luck!

[@subarnaxettri9781]

Best of luck for tomorrow's exam😂

[@anubasnet9131]

Bless me😭😂

[@Loksewa2052]

Sir physics ko important question haru ko video banaununa please 🥺❤️

[@livetv475]

yehi taa ho important questionss..its a complete package

[@kowangtamang7960]

Sir can you explain numerical examples of equilibrium level of output and price (class 12) economics

[@ashishkhatri989]

Best channel ever

[@Anonymoususer-e7k]

33:41

[@prasunahamal8843]

suru ma 1.25 T thiyena rw sir? Why you put 0.25T

[@khushijaiswal3115]

Thankyou soo soo much sir 😊

[@preety__stranger497]

U are our life saver ❤

[@rc_savage]

Thanks a lot guruba❤❤😊

[@Nostalgia20848]

Yo question haru Lai description link ma rakhdinus na please sabai question haru ko

[@dhirandhakal4623]

Really nice make other chapter video also

[@roshanthapamagar4]

kasari magnetic field radial banauxam haina r?

[@Aadityamalla1]

Math ko new syllabus ko sample questions pls sir ???

[@binayakregmi3263]

Physics commerce sab padhaunu dai..

[@anushkagurungnani2360]

Thank you so much sir I was solute your hard work❤

[@UncleMonk298]

Wha-?🐒

[@jameenrai9181]

Sir,BBS 1 st yr micro economics unit 4 Dekhi explain garidinu na 🙏🙏🙏🙏

[@binodgurung3894]

in this video many mistake in video editing and reading the question

[@headshotgaming9453]

15:13

[@headshotgaming9453]

10:01

[@headshotgaming9453]

8:04

[@mrpasangtamang3186]

Account ko class 11(new course) ko banaunu na hau over demand xa. Hamro college ma sab jana ley parkhiraxa

[@Anonymoususer-e7k]

Thanks

[@Aadityamalla1]

Thanks u sir ♥️

[@srijanagautam7929]

Thank you sir

[@PramodBhatta123]

Thankyou sir

[@Mr.sparrow9876]

Question no wrong xa haii

[@pratimashiwakoti9043]

❤❤

[@98Saloni]

Sir you forgot about 10 class 🌚

[@nirajanpatel3020]

Thank you sir ..very much ♥️

[@Nostalgia20848]

Yo question haru ko solution ni haldinu na

[@samriddha348]

🍁🍁

[@headshotgaming9453]

19:44

[@headshotgaming9453]

8:18