- #1

- 1,444

- 2

Given a spherical surface of radius R which carries a surface charge [itex] \simga = k \cos\theta [/itex]

Calculate the dipole moment of this charge distribtuion

well using this equation

[tex] \vec{p} = \int \vec{r'} \sigma(\theta') dA' = \int Rk \cos\theta R^2 \sin\theta d\theta d\phi [/tex]

but i was told that this setup is wrong that - tat the first term in the integration which i have as R should be [itex] R \cos\theta[/itex] why is that??

what about my area element is that correct?

Please help

thank you in advance!