Sep4-11, 10:47 PM
A uniformly charged disk has a radius of 2.6 cm and carries a total charge of 3.6*10^-6C.
Find the electric field on the x-axis at a distance of 3.3mm away/
I really don't understand what I put for sigma.
this is what I have so far:
(sigma/2(8.85*10^.12))(1-( 1/ sqrt( ( .026m^2/0.0033^2)-1))
Sigma is the total charge/the area...
so sigma= (3.6*10^-6)/(2pi(.026)^2)=8.48*10^-4
I feel like I have some part of this wrong.
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