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Ive 3 queries regarding the above one1)Inthe above one instead of substituting cos value as OP/AP and integrating in terms of dq limits how to integrate it in angle limits ?? ie from 0 to 2πby not substituting the cos value 2) dE sin gets cancelled due to symmetry about axis . can u pl prove it by integrating dE sin and proving it to be 0 3)instead of integrating dEcos what if I integrate whole dE with out resolving it in to components however dE sin is 0 . pl sir I request u to derive the above asked ones I tried but not getting them

Ive 3 queries regarding the above one1)Inthe above one instead of substituting cos value as OP/AP and integrating in terms of dq limits how to integrate it in angle limits ?? ie from 0 to 2πby not substituting the cos value 2) dE sin gets cancelled due to symmetry about axis . can u pl prove it by integrating dE sin and proving it to be 0 3)instead of integrating dEcos what if I integrate whole dE with out resolving it in to components however dE sin is 0 . pl sir I request u to derive the above asked ones I tried but not getting them

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Grade:12

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