Havent done hcv of this chapter. But i found your method easier on goiit @pratyaksh_tyagi
Your method is easier. Coz many take x as horizontal and then get into trigo.
But the doubt is we usually take dx in direction of x and here you took perpendicular to it. @pratyaksh_tyagi
@Anindya_Sikdar can u help us in determining distribution of induced charge.
Ok, so will this be wrong? Didn't thought that
I have never seen this type of integration before. Dont know if wrong or right. But this is totally diff from general methods.
Which question @Aayush?
Wait I did wrong. @Aayush
@Unik-Wadhwani this question
Is it correct? We are required to find resistance of this solid
See this -
2nd one is correct
1st one is wrong.
Charge on the inner surface of the cavity will be uniform only when q is placed at the centre of the cavity. Otherwise it will not be uniform.
U don't need to know distribution here..
E due to cavity is 0
@pratyaksh_tyagi yes now this is correct
@Unik-Wadhwani thnks for confiRming
@Anindya_Sikdar can you explain more deeper. I didnt get it.
I am getting c as the answer for 7th! Net electric field at O should be zero.
I am getting d as well!
Answer is D @ananda_krishnan
How can there be two answers for such question?
No c is not right..i did a slight mistake.D has to be the answer!
Can you explain me how to know charge distribution here @ananda_krishnan
@Anindya_Sikdar saying no need to know charge distribution here. Why so?
Why charge will not be induced by 4Q?
@Aayush now i was just pondering about taking the net field at O as zero..now tell me what all fields are contributing at O.
Induced on Cavity surface and And may be induced on sphere surface by 4q.. @ananda_krishnan
See acc to me the net field at O will be contributed by +Q,+4Q,Induced charge inside the cavity and induced charge on the outer part of big sphere..what do yu think?Now lets assess each of them one by one!