Electricity

as we know the given structure is as same as spherical geometry and that's why here it is

& it's value ??

cos@ ???

yes

it's value came from as z = rcos(thitha)

Now z^.r^ = z^r^cos(thitha)

but mam it is writing only cos@ not z r cos@

dear z^ basically means k^ in ijk notation k^ represents z^

ya mam that thing i got but if k. r= k . r cos@ why only cos@ u are putting

in highlighted line

bcoz here mode of unit vectors is one.

see this

ok mam thanks one last thing like above one please explain me how u replace ai+BJ+CK from k.r in paper

by digram or something so i am 💯% clear with this one

it depends on area vector

How ?? i know it's too much but I am very weak in this☹️

dear u should use chapter first of electrodynamics by griffiths

that book has excelling explanation or u can use you tube video for area vector

yes mam sure i have that thing for area vector is there anything related to this!??

yes exactly

formule to hi per relate Nahi kar pa raha

area vector se kese depend kar raha

dear see the geometry if ....... generally in sphere radius is constant so dr=0 now area vector will be in that direction

ok mam thank so much I am marking you best as always 🥰🥰🥰🥰

welcome dear

dear i answered your other questions too plz mark them as well

see attached

solution

kindly explain me in more detail about k cap & r cap how it comes there.!?? How it's value u have decided.

see attached file

see attached file

see attached file

if flux will be a vector quantity then option B should be correct. Right na ???

yes

sir kindly explain me in more detail about k cap & r cap how it comes there.!?? How it's value u have decided.

dear k^ ans r^ came from spherical geometry.

dear I think your doubt cleared already by vaishali ma'am

how you considered area in K cap direaction???

apply right hand thumb rule x*y will give z cap

since it's going in - z axis direction so why not option B which shows its direction also