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Dirac Delta function and charge density. 
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#1
Feb1308, 07:35 PM

P: 7

I have a line charge of length L and charge density /lambda on the Zaxis. I need to express the charge density in terms of the Dirac Delta function of theta and phi. How would I go about doing this?



#2
Feb1308, 07:53 PM

P: 455

[tex]\rho=\lambda\delta(1\cos\theta)U(Lr))/(2\pi r^2)[/tex],
where U is the unit step function, should be the charge density in spherical coordinates. 


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